Properties of the Number -221021

Two Hundred Twenty-One Thousand Twenty-One

Basics

Value: -221022 → -221021 → -221020

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 8

Digital Root: 8

Palindrome: No

Factorization: 221021

Divisors: 1, 221021

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -110101111101011101

Octal: -657535

Duodecimal: -A7AA5

Hexadecimal: -35f5d

Square: 48850282441

Square Root: 470.1287057817253

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

Smallest prime p such that the multiplicative order of 8 modulo p is n, or 0 if no such prime exists. A372798

Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 85. A31673

Smallest prime which occurs exactly n times in the sequence A086527. A86528