Properties of the Number -220221

Two Hundred Twenty Thousand Two Hundred Twenty-One

Basics

Value: -220222 → -220221 → -220220

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 9

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 24469

Divisors: 1, 3, 9, 24469, 73407, 220221

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

7925 Try Today's Challenge

Representations

Binary: -110101110000111101

Octal: -656075

Duodecimal: -A7539

Hexadecimal: -35c3d

Square: 48497288841

Square Root: 469.2771036392038

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 positive integer m such that (m^2ⁿ + 1)/2 is prime. A275530

Number of lower triangular n X n arrays colored with integers 0 upwards introduced in row major order, with no element equal to any diagonal or antidiagonal neighbor, and containing the value n(n+1)/2-2. A211958