12112554012 has 24 divisors (see below), whose sum is σ = 30436674576. Its totient is φ = 3726939648.

The previous prime is 12112553989. The next prime is 12112554023. The reversal of 12112554012 is 21045521121.

It is a happy number.

It is a super-2 number, since 2×12112554012² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38822133 + ... + 38822444.

It is an arithmetic number, because the mean of its divisors is an integer number (1268194774).

Almost surely, 2^12112554012 is an apocalyptic number.

12112554012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12112554012 is an abundant number, since it is smaller than the sum of its proper divisors (18324120564).

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

12112554012 is a wasteful number, since it uses less digits than its factorization.

12112554012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77644597 (or 77644595 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 24.

The spelling of 12112554012 in words is "twelve billion, one hundred twelve million, five hundred fifty-four thousand, twelve".