12131321121232 has 80 divisors (see below), whose sum is σ = 25439603904000. Its totient is φ = 5586266829312.

The previous prime is 12131321121221. The next prime is 12131321121421. The reversal of 12131321121232 is 23212112313121.

It is a junction number, because it is equal to n+sod(n) for n = 12131321121197 and 12131321121206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1697632 + ... + 5210047.

It is an arithmetic number, because the mean of its divisors is an integer number (317995048800).

Almost surely, 2^{12131321121232} is an apocalyptic number.

It is an amenable number.

12131321121232 is an abundant number, since it is smaller than the sum of its proper divisors (13308282782768).

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

12131321121232 is a wasteful number, since it uses less digits than its factorization.

12131321121232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6907868 (or 6907862 counting only the distinct ones).

The product of its digits is 864, while the sum is 25.

Adding to 12131321121232 its reverse (23212112313121), we get a palindrome (35343433434353).

The spelling of 12131321121232 in words is "twelve trillion, one hundred thirty-one billion, three hundred twenty-one million, one hundred twenty-one thousand, two hundred thirty-two".