12112112331 has 80 divisors (see below), whose sum is σ = 20657522688. Its totient is φ = 7005398400.

The previous prime is 12112112329. The next prime is 12112112339. The reversal of 12112112331 is 13321121121.

12112112331 is a `hidden beast` number, since 121 + 1 + 211 + 2 + 331 = 666.

12112112331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12112112331 - 2¹ = 12112112329 is a prime.

It is a super-2 number, since 2×12112112331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12112112339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2013330 + ... + 2019336.

Almost surely, 2^12112112331 is an apocalyptic number.

12112112331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12112112331 is a deficient number, since it is larger than the sum of its proper divisors (8545410357).

12112112331 is a wasteful number, since it uses less digits than its factorization.

12112112331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6134 (or 6125 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

Adding to 12112112331 its reverse (13321121121), we get a palindrome (25433233452).

The spelling of 12112112331 in words is "twelve billion, one hundred twelve million, one hundred twelve thousand, three hundred thirty-one".