12154515112 has 16 divisors (see below), whose sum is σ = 22793703840. Its totient is φ = 6076194096.

The previous prime is 12154515097. The next prime is 12154515127. The reversal of 12154515112 is 21151545121.

It is an interprime number because it is at equal distance from previous prime (12154515097) and next prime (12154515127).

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, 83268 + ... + 176755.

It is an arithmetic number, because the mean of its divisors is an integer number (1424606490).

Almost surely, 2^12154515112 is an apocalyptic number.

It is an amenable number.

12154515112 is a deficient number, since it is larger than the sum of its proper divisors (10639188728).

12154515112 is a wasteful number, since it uses less digits than its factorization.

12154515112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265872 (or 265868 counting only the distinct ones).

The product of its digits is 2000, while the sum is 28.

The spelling of 12154515112 in words is "twelve billion, one hundred fifty-four million, five hundred fifteen thousand, one hundred twelve".