21,022
21,022 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 7
- Digit product
- 0
- Digital root
- 7
- Palindrome
- No
- Bit width
- 15 bits
- Reversed
- 22,012
- Recamán's sequence
- a(41,795) = 21,022
- Square (n²)
- 441,924,484
- Cube (n³)
- 9,290,136,502,648
- Divisor count
- 8
- σ(n) — sum of divisors
- 32,976
- φ(n) — Euler's totient
- 10,032
- Sum of prime factors
- 482
Primality
Prime factorization: 2 × 23 × 457
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- twenty-one thousand twenty-two
- Ordinal
- 21022nd
- Binary
- 101001000011110
- Octal
- 51036
- Hexadecimal
- 0x521E
- Base64
- Uh4=
- One's complement
- 44,513 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋 𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓆼𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵κακβʹ
- Mayan (base 20)
- 𝋢·𝋬·𝋫·𝋢
- Chinese
- 二萬一千零二十二
- Chinese (financial)
- 貳萬壹仟零貳拾貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 21,022 = 3
- e — Euler's number (e)
- Digit 21,022 = 9
- φ — Golden ratio (φ)
- Digit 21,022 = 4
- √2 — Pythagoras's (√2)
- Digit 21,022 = 2
- ln 2 — Natural log of 2
- Digit 21,022 = 1
- γ — Euler-Mascheroni (γ)
- Digit 21,022 = 5
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 21022, here are decompositions:
- 3 + 21019 = 21022
- 5 + 21017 = 21022
- 11 + 21011 = 21022
- 41 + 20981 = 21022
- 59 + 20963 = 21022
- 83 + 20939 = 21022
- 101 + 20921 = 21022
- 149 + 20873 = 21022
Showing the first eight; more decompositions exist.
UTF-8 encoding: E5 88 9E (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.82.30.
- Address
- 0.0.82.30
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.82.30
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 21022 first appears in π at position 42,550 of the decimal expansion (the 42,550ordinal-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.