12112055121 has 16 divisors (see below), whose sum is σ = 16210152000. Its totient is φ = 8044373568.

The previous prime is 12112055113. The next prime is 12112055129. The reversal of 12112055121 is 12155021121.

It is an interprime number because it is at equal distance from previous prime (12112055113) and next prime (12112055129).

It is not a de Polignac number, because 12112055121 - 2³ = 12112055113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12112055129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1332490 + ... + 1341548.

It is an arithmetic number, because the mean of its divisors is an integer number (1013134500).

Almost surely, 2^12112055121 is an apocalyptic number.

It is an amenable number.

12112055121 is a deficient number, since it is larger than the sum of its proper divisors (4098096879).

12112055121 is a wasteful number, since it uses less digits than its factorization.

12112055121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10688.

The product of its (nonzero) digits is 200, while the sum is 21.

Adding to 12112055121 its reverse (12155021121), we get a palindrome (24267076242).

The spelling of 12112055121 in words is "twelve billion, one hundred twelve million, fifty-five thousand, one hundred twenty-one".