12112112115 has 128 divisors (see below), whose sum is σ = 23212800000. Its totient is φ = 5973834240.

The previous prime is 12112112099. The next prime is 12112112119. The reversal of 12112112115 is 51121121121.

It is a happy number.

It is not a de Polignac number, because 12112112115 - 2⁴ = 12112112099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12112112119) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 31136341 + ... + 31136729.

It is an arithmetic number, because the mean of its divisors is an integer number (181350000).

Almost surely, 2^12112112115 is an apocalyptic number.

12112112115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12112112115 is a deficient number, since it is larger than the sum of its proper divisors (11100687885).

12112112115 is a wasteful number, since it uses less digits than its factorization.

12112112115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682 (or 676 counting only the distinct ones).

The product of its digits is 40, while the sum is 18.

Adding to 12112112115 its reverse (51121121121), we get a palindrome (63233233236).

The spelling of 12112112115 in words is "twelve billion, one hundred twelve million, one hundred twelve thousand, one hundred fifteen".