13123132112 has 20 divisors (see below), whose sum is σ = 25857020640. Its totient is φ = 6450352608.

The previous prime is 13123132091. The next prime is 13123132157. The reversal of 13123132112 is 21123132131.

It is a happy number.

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, 6949868 + ... + 6951755.

It is an arithmetic number, because the mean of its divisors is an integer number (1292851032).

Almost surely, 2^13123132112 is an apocalyptic number.

It is an amenable number.

13123132112 is a deficient number, since it is larger than the sum of its proper divisors (12733888528).

13123132112 is a wasteful number, since it uses less digits than its factorization.

13123132112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13901690 (or 13901684 counting only the distinct ones).

The product of its digits is 216, while the sum is 20.

Adding to 13123132112 its reverse (21123132131), we get a palindrome (34246264243).

The spelling of 13123132112 in words is "thirteen billion, one hundred twenty-three million, one hundred thirty-two thousand, one hundred twelve".