12112215135 has 16 divisors (see below), whose sum is σ = 19791876096. Its totient is φ = 6322404128.

The previous prime is 12112215113. The next prime is 12112215161. The reversal of 12112215135 is 53151221121.

It is a cyclic number.

It is not a de Polignac number, because 12112215135 - 2⁷ = 12112215007 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8589519 + ... + 8590928.

It is an arithmetic number, because the mean of its divisors is an integer number (1236992256).

Almost surely, 2^12112215135 is an apocalyptic number.

12112215135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12112215135 is a deficient number, since it is larger than the sum of its proper divisors (7679660961).

12112215135 is a wasteful number, since it uses less digits than its factorization.

12112215135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17180502.

The product of its digits is 600, while the sum is 24.

Adding to 12112215135 its reverse (53151221121), we get a palindrome (65263436256).

The spelling of 12112215135 in words is "twelve billion, one hundred twelve million, two hundred fifteen thousand, one hundred thirty-five".