Properties of the Number -22220

Twenty-Two Thousand Two Hundred Twenty

Basics

Value: -22221 → -22220 → -22219

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 8

Digital Root: 8

Palindrome: No

Factorization: 2 ² × 5 × 11 × 101

Divisors: 1, 2, 4, 5, 10, 11, 20, 22, 44, 55

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101011011001100

Octal: -53314

Duodecimal: -10A38

Hexadecimal: -56cc

Square: 493728400

Square Root: 149.06374475371265

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

An accelerator sequence for Catalan's constant. A94648

Expansion of (f(x³) / f(x))⁶ in powers of·where f() is a Ramanujan θ function. A264026

Coordination sequence for hexagonal close-packing. A7899

Numbers k such that k³ divides 3^k² - 1. A129211

Numbers whose decimal expansion contains only 0's and 2's. A169965

Dates after Jan 01 00 in chronological order which are palindromic when they are written according to the format MMDDYY (American standard, short). Leading zeros of the terms are suppressed. A210895

Triangle read by rows: T(n,m) (n >= m >= 1) = number of line segments formed by drawing the lines connecting any two of the 2*(m+n) perimeter points of an m X n grid of squares. A331454

For k in {2,3,...,9} define a sequence as follows: a(0)=0; for n>=0, a(n+1)=a(n)+1, unless a(n) ends in k, in which case a(n+1) is obtained by replacing the last digit of a(n) with the digit(s) of k². This is k(4). A237341

a(n,k) equals the number of semistandard Young tableaux with shape of a partition of n and maximal element <= k. A191714

Coefficients in the expansion of C⁷/B⁸, in Watson's notation of page 106. A160521