Number
20,101
20,101 is a prime, odd.
Properties
- Parity
- Odd
- Digit count
- 5
- Digit sum
- 4
- Digit product
- 0
- Digital root
- 4
- Palindrome
- No
- Bit width
- 15 bits
- Reversed
- 10,102
- Square (n²)
- 404,050,201
- Cube (n³)
- 8,121,813,090,301
- Divisor count
- 2
- σ(n) — sum of divisors
- 20,102
- φ(n) — Euler's totient
- 20,100
Primality
20,101 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Aliquot sum (sum of proper divisors):
1
First multiples
20,101
·
40,202
(double)
·
60,303
·
80,404
·
100,505
·
120,606
·
140,707
·
160,808
·
180,909
·
201,010
Sums & aliquot sequence
As a sum of two squares:
65² + 126²
As consecutive integers:
10,050 + 10,051
Representations
- In words
- twenty thousand one hundred one
- Ordinal
- 20101st
- Binary
- 100111010000101
- Octal
- 47205
- Hexadecimal
- 0x4E85
- Base64
- ToU=
- One's complement
- 45,434 (16-bit)
In other bases
ternary (3)
1000120111
quaternary (4)
10322011
quinary (5)
1120401
senary (6)
233021
septenary (7)
112414
nonary (9)
30514
undecimal (11)
14114
duodecimal (12)
b771
tridecimal (13)
91c3
tetradecimal (14)
747b
pentadecimal (15)
5e51
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓍢𓏺
- Greek (Milesian)
- ͵κραʹ
- Mayan (base 20)
- 𝋢·𝋪·𝋥·𝋡
- Chinese
- 二萬零一百零一
- Chinese (financial)
- 貳萬零壹佰零壹
In other modern scripts
Eastern Arabic
٢٠١٠١
Devanagari
२०१०१
Bengali
২০১০১
Tamil
௨௦௧௦௧
Thai
๒๐๑๐๑
Tibetan
༢༠༡༠༡
Khmer
២០១០១
Lao
໒໐໑໐໑
Burmese
၂၀၁၀၁
Digit at this position in famous constants
- π — Pi (π)
- Digit 20,101 = 0
- e — Euler's number (e)
- Digit 20,101 = 9
- φ — Golden ratio (φ)
- Digit 20,101 = 7
- √2 — Pythagoras's (√2)
- Digit 20,101 = 2
- ln 2 — Natural log of 2
- Digit 20,101 = 2
- γ — Euler-Mascheroni (γ)
- Digit 20,101 = 1
Also seen as
Prime neighborhood
Unicode codepoint
亅
CJK Unified Ideograph-4E85
U+4E85
Other letter (Lo)
UTF-8 encoding: E4 BA 85 (3 bytes).
Hex color
#004E85
RGB(0, 78, 133)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.78.133.
- Address
- 0.0.78.133
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.78.133
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Position in π
The digit sequence 20101 first appears in π at position 135,022 of the decimal expansion (the 135,022ordinal-suffix:nd 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.