Properties of the Number -12220

Twelve Thousand Two Hundred Twenty

Basics

Value: -12221 → -12220 → -12219

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 7

Digital Root: 7

Palindrome: No

Factorization: 2 ² × 5 × 13 × 47

Divisors: 1, 2, 4, 5, 10, 13, 20, 26, 47, 52

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -10111110111100

Octal: -27674

Duodecimal: -70A4

Hexadecimal: -2fbc

Square: 149328400

Square Root: 110.54410884348383

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

Expansion of (ψ(x) / φ(x))⁵ in powers of·where φ(), ψ() are Ramanujan θ functions. A195861

a(n) = (1/720)*n*(n - 10)*(n - 1)*(n³ - 34·n² + 181·n - 144). A319932

Expansion of ∏_k>=1 (1-x^k)²⁶. A10831

a(n) = ∑_k=0..n (-1)^k * binomial(5·k,n-k). A360089

Numbers k for which 10k+1, 10k+3, 10k+7 and 10k+9 are primes. A7811

Sum of squares of four consecutive primes. A133524

Nonnegative integers in balanced ternary representation (with 2 standing for -1 digit). A140267

a(n) = n*(n+1)*(n+8)/6. A6503

Numbers in base -3. A73785

Expansion of (ψ(-x) / φ(-x))⁵ in powers of·where φ(), ψ() are Ramanujan θ functions. A1939