12112100988 has 48 divisors (see below), whose sum is σ = 30445341696. Its totient is φ = 3725599680.

The previous prime is 12112100969. The next prime is 12112100989. The reversal of 12112100988 is 88900121121.

It is a super-2 number, since 2×12112100988² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12112100989) 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, 555745 + ... + 577127.

It is an arithmetic number, because the mean of its divisors is an integer number (634277952).

Almost surely, 2^12112100988 is an apocalyptic number.

It is an amenable number.

12112100988 is an abundant number, since it is smaller than the sum of its proper divisors (18333240708).

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

12112100988 is a wasteful number, since it uses less digits than its factorization.

12112100988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25034 (or 25032 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 33.

The spelling of 12112100988 in words is "twelve billion, one hundred twelve million, one hundred thousand, nine hundred eighty-eight".