12131210132 has 12 divisors (see below), whose sum is σ = 22478418900. Its totient is φ = 5708804736.

The previous prime is 12131210101. The next prime is 12131210141. The reversal of 12131210132 is 23101213121.

It can be written as a sum of positive squares in 2 ways, for example, as 5601923716 + 6529286416 = 74846^2 + 80804^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 12131210132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89200007 + ... + 89200142.

It is an arithmetic number, because the mean of its divisors is an integer number (1873201575).

Almost surely, 2^12131210132 is an apocalyptic number.

It is an amenable number.

12131210132 is a deficient number, since it is larger than the sum of its proper divisors (10347208768).

12131210132 is a wasteful number, since it uses less digits than its factorization.

12131210132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178400170 (or 178400168 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 12131210132 its reverse (23101213121), we get a palindrome (35232423253).

The spelling of 12131210132 in words is "twelve billion, one hundred thirty-one million, two hundred ten thousand, one hundred thirty-two".