12112012012 has 24 divisors (see below), whose sum is σ = 21838519136. Its totient is φ = 5873482368.

The previous prime is 12112012009. The next prime is 12112012019. The reversal of 12112012012 is 21021021121.

It is a junction number, because it is equal to n+sod(n) for n = 12112011983 and 12112012001.

It is not an unprimeable number, because it can be changed into a prime (12112012019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84408 + ... + 177055.

Almost surely, 2^12112012012 is an apocalyptic number.

It is an amenable number.

12112012012 is a deficient number, since it is larger than the sum of its proper divisors (9726507124).

12112012012 is a wasteful number, since it uses less digits than its factorization.

12112012012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261817 (or 261815 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12112012012 its reverse (21021021121), we get a palindrome (33133033133).

The spelling of 12112012012 in words is "twelve billion, one hundred twelve million, twelve thousand, twelve".