12112011992 has 32 divisors (see below), whose sum is σ = 22782298080. Its totient is φ = 6036768000.

The previous prime is 12112011949. The next prime is 12112012009. The reversal of 12112011992 is 29911021121.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

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, 4034492 + ... + 4037492.

It is an arithmetic number, because the mean of its divisors is an integer number (711946815).

Almost surely, 2^12112011992 is an apocalyptic number.

It is an amenable number.

12112011992 is a deficient number, since it is larger than the sum of its proper divisors (10670286088).

12112011992 is a wasteful number, since it uses less digits than its factorization.

12112011992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4443 (or 4439 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 29.

The spelling of 12112011992 in words is "twelve billion, one hundred twelve million, eleven thousand, nine hundred ninety-two".