21132130131 has 12 divisors (see below), whose sum is σ = 34884786352. Its totient is φ = 12075502896.

The previous prime is 21132130081. The next prime is 21132130153. The reversal of 21132130131 is 13103123112.

21132130131 is a `hidden beast` number, since 2 + 11 + 321 + 301 + 31 = 666.

It is not a de Polignac number, because 21132130131 - 2¹⁰ = 21132129107 is a prime.

It is a super-2 number, since 2×21132130131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21132130181) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 167715256 + ... + 167715381.

Almost surely, 2^21132130131 is an apocalyptic number.

21132130131 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

21132130131 is a deficient number, since it is larger than the sum of its proper divisors (13752656221).

21132130131 is a wasteful number, since it uses less digits than its factorization.

21132130131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335430650 (or 335430647 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 21132130131 its reverse (13103123112), we get a palindrome (34235253243).

The spelling of 21132130131 in words is "twenty-one billion, one hundred thirty-two million, one hundred thirty thousand, one hundred thirty-one".