Properties of the Number -212221

Two Hundred Twelve Thousand Two Hundred Twenty-One

Basics

Value: -212222 → -212221 → -212220

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 10

Digital Root: 1

Palindrome: No

Factorization: 23 × 9227

Divisors: 1, 23, 9227, 212221

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -110011110011111101

Octal: -636375

Duodecimal: -A2991

Hexadecimal: -33cfd

Square: 45037752841

Square Root: 460.6745054808221

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

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

Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 161", based on the 5-celled von Neumann neighborhood. A286165

Concatenation of n, n+1 and n. A261618

Lucky numbers that are concatenations of n with n + 9. A32659

"DFK" (bracelet, size, unlabeled) transform of 2,1,1,1... A32215

List of Nyldon words over {1,2}. A328073

k th digit of a(n) = number of different digits within 2 places of k (not including k). A39987

k th digit of a(n) is the number of different digits within 3 of k (not including k). A39989

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