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Properties of the Number 22120

Twenty-Two Thousand One Hundred Twenty

Basics

Value: 22119 → 22120 → 22121

Parity: even

Prime: No

Previous Prime: 22111

Next Prime: 22123

Digit Sum: 7

Digital Root: 7

Palindrome: No

Factorization: 2 3 × 5 × 7 × 79

Divisors: 1, 2, 4, 5, 7, 8, 10, 14, 20, 28

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101011001101000

Octal: 53150

Duodecimal: 10974

Hexadecimal: 5668

Square: 489294400

Square Root: 148.72793954062564

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

Multiples of 7 whose sum of digits is equal to 7. A63416
Triangle read by rows: T(n,k) = number of permutations of length n with exactly k rising or falling successions, for n >= 1, 0 <= k <= n-1. A1100
7 times hexagonal numbers: a(n) = 7·n*(2·n-1). A195320
θ series of A7 lattice. A8447
Brent's irregular triangle T[r,k] related to Hardy-Littlewood constants of prime gaps 2r. A381083
Maximum value taken on by f(P) = ∑i=1..n p(i)*p(n+1-i) as {p(1),p(2),...,p(n)} ranges over all permutations P of {1,2,3,...,n}. A87035
Number of partitions of n having no odd singletons (n>=0). A265256
Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 291", based on the 5-celled von Neumann neighborhood. A280567
Number of permutations of [n] with exactly floor(n/2) rising or falling successions. A322294
Number of permutations of length n with exactly 4 rising or falling successions. A86855