131220022131 has 48 divisors (see below), whose sum is σ = 210389906688. Its totient is φ = 78141412800.

The previous prime is 131220022111. The next prime is 131220022133.

131220022131 is a `hidden beast` number, since 1 + 312 + 200 + 22 + 131 = 666.

131220022131 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 131220022131 - 2⁵ = 131220022099 is a prime.

It is a super-2 number, since 2×131220022131² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131220022133) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2608386 + ... + 2658216.

It is an arithmetic number, because the mean of its divisors is an integer number (4383123056).

Almost surely, 2^131220022131 is an apocalyptic number.

131220022131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

131220022131 is a deficient number, since it is larger than the sum of its proper divisors (79169884557).

131220022131 is a wasteful number, since it uses less digits than its factorization.

131220022131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50312 (or 50309 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

It can be divided in two parts, 1312200 and 22131, that added together give a palindrome (1334331).

The spelling of 131220022131 in words is "one hundred thirty-one billion, two hundred twenty million, twenty-two thousand, one hundred thirty-one".