12112012 has 24 divisors (see below), whose sum is σ = 23288832. Its totient is φ = 5466000.

The previous prime is 12111997. The next prime is 12112013. The reversal of 12112012 is 21021121.

It is a self number, because there is not a number n which added to its sum of digits gives 12112012.

It is not an unprimeable number, because it can be changed into a prime (12112013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5733 + ... + 7555.

It is an arithmetic number, because the mean of its divisors is an integer number (970368).

Almost surely, 2^12112012 is an apocalyptic number.

It is an amenable number.

12112012 is a deficient number, since it is larger than the sum of its proper divisors (11176820).

12112012 is a wasteful number, since it uses less digits than its factorization.

12112012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1989 (or 1987 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 12112012 is about 3480.2316014886. The cubic root of 12112012 is about 229.6529864720.

Adding to 12112012 its reverse (21021121), we get a palindrome (33133133).

It can be divided in two parts, 1211 and 2012, that added together give a palindrome (3223).

The spelling of 12112012 in words is "twelve million, one hundred twelve thousand, twelve".