135,221
135,221 is a prime, odd.
135,221 (one hundred thirty-five thousand two hundred twenty-one) is an odd 6-digit number. It is a prime number — divisible only by 1 and itself. Written other ways, in hexadecimal, 0x21035.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 14
- Digit product
- 60
- Digital root
- 5
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 122,531
- Square (n²)
- 18,284,718,841
- Cube (n³)
- 2,472,477,966,398,861
- Divisor count
- 2
- σ(n) — sum of divisors
- 135,222
- φ(n) — Euler's totient
- 135,220
Primality
135,221 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√135,221 = [367; (1, 2, 1, 1, 1, 1, 1, 20, 2, 1, 1, 4, 2, 9, 9, 1, 31, 13, 2, 1, 14, 1, 35, 1, …)]
Representations
- In words
- one hundred thirty-five thousand two hundred twenty-one
- Ordinal
- 135221st
- Binary
- 100001000000110101
- Octal
- 410065
- Hexadecimal
- 0x21035
- Base64
- AhA1
- One's complement
- 4,294,832,074 (32-bit)
- Scientific notation
- 1.35221 × 10⁵
- As a duration
- 135,221 s = 1 day, 13 hours, 33 minutes, 41 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓎆𓎆𓏺
- Greek (Milesian)
- ͵ρλεσκαʹ
- Mayan (base 20)
- 𝋰·𝋲·𝋡·𝋡
- Chinese
- 一十三萬五千二百二十一
- Chinese (financial)
- 壹拾參萬伍仟貳佰貳拾壹
Also seen as
UTF-8 encoding: F0 A1 80 B5 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.16.53.
- Address
- 0.2.16.53
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.16.53
Unspecified address (0.0.0.0/8) — "this network" placeholder.
This number falls in the range of US utility patent numbers. If it's a patent, it would be issued as US 135,221 and was likely granted around 1872.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
Related reading
- Prime numbers — The building blocks of arithmetic: what primes are, why they matter, and how we find them.
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.