Properties of the Number -122221

One Hundred Twenty-Two Thousand Two Hundred Twenty-One

Basics

Value: -122222 → -122221 → -122220

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 10

Digital Root: 1

Palindrome: Yes

Factorization: 11 × 41 × 271

Divisors: 1, 11, 41, 271, 451, 2981, 11111, 122221

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11101110101101101

Octal: -356555

Duodecimal: -5A891

Hexadecimal: -1dd6d

Square: 14937972841

Square Root: 349.6012013709335

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

Divisors of 9999999999. A27895

Dates after Jan 01 00 in chronological order which are palindromic when they are written according to the format MMDDYY (American standard, short). Leading zeros of the terms are suppressed. A210895

Concatenate (1,n,n,1). A100846

a(n) = n 2's sandwiched between two 1's. A132583

a(n) = n² written in base 3. A1738

Expansion of g.f. x*(1+10·x)/((1-x)*(1-10·x²)). A94623

Expansion of g.f. x*(1+11·x+x²)/((1-x)*(1+x)*(1-10·x²)). A94624

Triangle read by rows in which row n lists the binary words of length n over the alphabet {1,2} with no initial repeats. A211029

Palindromes which are base-3 representations of squares. A263608

Numbers which are products of repunits. A308365