12932156121 has 16 divisors (see below), whose sum is σ = 17758281600. Its totient is φ = 8365033728.

The previous prime is 12932156113. The next prime is 12932156123. The reversal of 12932156121 is 12165123921.

It is a happy number.

It is not a de Polignac number, because 12932156121 - 2³ = 12932156113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12932156123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122416 + ... + 202113.

It is an arithmetic number, because the mean of its divisors is an integer number (1109892600).

Almost surely, 2^12932156121 is an apocalyptic number.

It is an amenable number.

12932156121 is a deficient number, since it is larger than the sum of its proper divisors (4826125479).

12932156121 is a wasteful number, since it uses less digits than its factorization.

12932156121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324928.

The product of its digits is 6480, while the sum is 33.

The spelling of 12932156121 in words is "twelve billion, nine hundred thirty-two million, one hundred fifty-six thousand, one hundred twenty-one".