12112144 has 20 divisors (see below), whose sum is σ = 25601040. Its totient is φ = 5505440.

The previous prime is 12112127. The next prime is 12112159. The reversal of 12112144 is 44121121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34234 + ... + 34585.

It is an arithmetic number, because the mean of its divisors is an integer number (1280052).

Almost surely, 2^12112144 is an apocalyptic number.

It is an amenable number.

12112144 is an abundant number, since it is smaller than the sum of its proper divisors (13488896).

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

12112144 is a wasteful number, since it uses less digits than its factorization.

12112144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68838 (or 68832 counting only the distinct ones).

The product of its digits is 64, while the sum is 16.

The square root of 12112144 is about 3480.2505656921. The cubic root of 12112144 is about 229.6538207425.

Adding to 12112144 its reverse (44121121), we get a palindrome (56233265).

The spelling of 12112144 in words is "twelve million, one hundred twelve thousand, one hundred forty-four".