131120021100 has 72 divisors (see below), whose sum is σ = 391611824128. Its totient is φ = 33837422400.

The previous prime is 131120021093. The next prime is 131120021119. The reversal of 131120021100 is 1120021131.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7040164 + ... + 7058763.

Almost surely, 2^131120021100 is an apocalyptic number.

131120021100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131120021100 is an abundant number, since it is smaller than the sum of its proper divisors (260491803028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131120021100 is a wasteful number, since it uses less digits than its factorization.

131120021100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14098975 (or 14098968 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 131120021100 its reverse (1120021131), we get a palindrome (132240042231).

The spelling of 131120021100 in words is "one hundred thirty-one billion, one hundred twenty million, twenty-one thousand, one hundred".