108,821
108,821 is a prime, odd.
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 20
- Digit product
- 0
- Digital root
- 2
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 128,801
- Recamán's sequence
- a(80,501) = 108,821
- Square (n²)
- 11,842,010,041
- Cube (n³)
- 1,288,659,374,671,661
- Divisor count
- 2
- σ(n) — sum of divisors
- 108,822
- φ(n) — Euler's totient
- 108,820
Primality
108,821 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√108,821 = [329; (1, 7, 2, 1, 5, 131, 1, 3, 2, 6, 1, 2, 1, 1, 1, 25, 1, 3, 11, 1, 2, 1, 8, 1, …)]
Representations
- In words
- one hundred eight thousand eight hundred twenty-one
- Ordinal
- 108821st
- Binary
- 11010100100010101
- Octal
- 324425
- Hexadecimal
- 0x1A915
- Base64
- AakV
- One's complement
- 4,294,858,474 (32-bit)
- Scientific notation
- 1.08821 × 10⁵
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋 𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹
- Egyptian hieroglyphic
- 𓆐𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓏺
- Greek (Milesian)
- ͵ρηωκαʹ
- Mayan (base 20)
- 𝋭·𝋬·𝋡·𝋡
- Chinese
- 一十萬八千八百二十一
- Chinese (financial)
- 壹拾萬捌仟捌佰貳拾壹
Also seen as
As an unsigned 32-bit integer, this is the IPv4 address 0.1.169.21.
- Address
- 0.1.169.21
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.169.21
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 108,821 and was likely granted around 1871.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
This passes the ABA routing number checksum and matches the Federal Reserve numbering scheme.
Banks operate many routing numbers per state and division; an unmatched checksum-valid number can still be a real RTN at a smaller institution.