10,221
10,221 is a composite number, odd.
10,221 (ten thousand two hundred twenty-one) is an odd 5-digit number. It is a composite number with 4 divisors, and factors as 3 × 3,407. Written other ways, in hexadecimal, 0x27ED.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 5
- Digit sum
- 6
- Digit product
- 0
- Digital root
- 6
- Palindrome
- No
- Bit width
- 14 bits
- Reversed
- 12,201
- Recamán's sequence
- a(5,701) = 10,221
- Square (n²)
- 104,468,841
- Cube (n³)
- 1,067,776,023,861
- Divisor count
- 4
- σ(n) — sum of divisors
- 13,632
- φ(n) — Euler's totient
- 6,812
- Sum of prime factors
- 3,410
Primality
Prime factorization: 3 × 3407
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√10,221 = [101; (10, 9, 1, 1, 8, 3, 1, 3, 2, 1, 2, 2, 2, 1, 1, 28, 3, 2, 1, 66, 1, 2, 3, 28, …)]
Period length 40 — the block in parentheses repeats forever.
Representations
- In words
- ten thousand two hundred twenty-one
- Ordinal
- 10221st
- Binary
- 10011111101101
- Octal
- 23755
- Hexadecimal
- 0x27ED
- Base64
- J+0=
- One's complement
- 55,314 (16-bit)
- Scientific notation
- 1.0221 × 10⁴
- As a duration
- 10,221 s = 2 hours, 50 minutes, 21 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹 𒌋𒌋𒌋𒌋𒌋 𒌋𒌋𒁹
- Egyptian hieroglyphic
- 𓂍𓍢𓍢𓎆𓎆𓏺
- Greek (Milesian)
- ͵ισκαʹ
- Mayan (base 20)
- 𝋡·𝋥·𝋫·𝋡
- Chinese
- 一萬零二百二十一
- Chinese (financial)
- 壹萬零貳佰貳拾壹
Digit at this position in famous constants
- π — Pi (π)
- Digit 10,221 = 3
- e — Euler's number (e)
- Digit 10,221 = 0
- φ — Golden ratio (φ)
- Digit 10,221 = 3
- √2 — Pythagoras's (√2)
- Digit 10,221 = 2
- ln 2 — Natural log of 2
- Digit 10,221 = 6
- γ — Euler-Mascheroni (γ)
- Digit 10,221 = 2
Also seen as
UTF-8 encoding: E2 9F AD (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.39.237.
- Address
- 0.0.39.237
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.39.237
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 10,221 Hz is closest to:
- Concert pitch (A4 = 440 Hz): D♯9 (9956.1 Hz, +45¢ — about midway to E9)
- Scientific pitch (C4 = 256 Hz): E9 (10321.3 Hz, -17¢)
- Baroque pitch (A4 = 415 Hz): E9 (9948.8 Hz, +47¢ — about midway to F9)
The digit sequence 10221 first appears in π at position 135,756 of the decimal expansion (the 135,756ordinal-suffix:th digit after the integer 3).
Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.
Related reading
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.