Properties of the Number -212122

Two Hundred Twelve Thousand One Hundred Twenty-Two

Basics

Value: -212123 → -212122 → -212121

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 10

Digital Root: 1

Palindrome: No

Factorization: 2 × 67 × 1583

Divisors: 1, 2, 67, 134, 1583, 3166, 106061, 212122

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -110011110010011010

Octal: -636232

Duodecimal: -A290A

Hexadecimal: -33c9a

Square: 44995742884

Square Root: 460.5670418082475

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

Take n-th string over {1,2} in lexicographic order and apply the Watanabe tag system {00, 1011} described in A291067 (but adapted to the alphabet {1,2}) just once. A291072

Shortest (x+1,2x)-code of n. A233135

Reversed shortest (x+1,2x)-code of n. A233137

Triangle read by rows: T(n,k) is the number of face-connected polyhedral components consisting of k cuboctahedra and n-k octahedra in the rectified cubic honeycomb up to translation, rotation, and reflection of the honeycomb, 0<=k<=n. A384782

Numbers for which the sum of reciprocals of square of digits is an integer. A182452