Properties of the Number -21118

Twenty-One Thousand One Hundred Eighteen

Basics

Value: -21119 → -21118 → -21117

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 × 10559

Divisors: 1, 2, 10559, 21118

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101001001111110

Octal: -51176

Duodecimal: -1027A

Hexadecimal: -527e

Square: 445969924

Square Root: 145.32033581023683

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

Numbers whose least quadratic nonresidue (A020649) is 23. A25028

Indices n such that A134204(n) < n. A133242

Coefficient of·in the reduction by x²->x+1 of the polynomial p(n,x) = (x+1) * (2x+1) * ... *(nx+1). A192463

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 403", based on the 5-celled von Neumann neighborhood. A271809

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 553", based on the 5-celled von Neumann neighborhood. A272848

The excess of the number of partitions of n with more odd parts than even parts over the number of partitions of n with more even parts than odd parts. A338860

Number of walks within N² (the first quadrant of Z²) starting and ending at (0,0) and consisting of 2 n steps taken from {(-1, -1), (-1, 1), (0, 1), (1, -1)}. A151333