Properties of the Number -10921

Ten Thousand Nine Hundred Twenty-One

Basics

Value: -10922 → -10921 → -10920

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 67 × 163

Divisors: 1, 67, 163, 10921

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8109 Try Today's Challenge

Representations

Binary: -10101010101001

Octal: -25251

Duodecimal: -63A1

Hexadecimal: -2aa9

Square: 119268241

Square Root: 104.50358845513392

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

a(n) = (5 + (-2)ⁿ)/3. A140966

A generalized Jacobsthal sequence. A83943

Inverse binomial transform of A084640. A171501

a(0) = 0. For n > 0, smallest non-palindromic number k such that the smallest palindrome in the Reverse and Add! trajectory of k is reached after exactly n iterations. A23109

a(n) = ∑_d∣n (n-1)!/(d-1)!. A87906

Heinz numbers of integer partitions with as many even parts as odd parts and as many even conjugate parts as odd conjugate parts. A350946

Expansion of x*(1+2·x)/((1+x)*(1-x)*(1-2·x)). A84639

Positions of ones in A264977; positions of twos in A277330. A277701

Nonprime Heinz numbers of multiples of triangular partitions, or of finite arithmetic progressions with offset 0. A325407

a(n) = (8·4ⁿ - 5)/3. A83584