12112912 has 60 divisors (see below), whose sum is σ = 27914880. Its totient is φ = 4987008.

The previous prime is 12112907. The next prime is 12112921. The reversal of 12112912 is 21921121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12112912.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 153289 + ... + 153367.

It is an arithmetic number, because the mean of its divisors is an integer number (465248).

Almost surely, 2^12112912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12112912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13957440).

12112912 is an abundant number, since it is smaller than the sum of its proper divisors (15801968).

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

12112912 is an equidigital number, since it uses as much as digits as its factorization.

12112912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168 (or 125 counting only the distinct ones).

The product of its digits is 72, while the sum is 19.

The square root of 12112912 is about 3480.3609008262. The cubic root of 12112912 is about 229.6586745599.

The spelling of 12112912 in words is "twelve million, one hundred twelve thousand, nine hundred twelve".