12112231112121 has 8 divisors (see below), whose sum is σ = 18456733123264. Its totient is φ = 6921274921200.

The previous prime is 12112231112053. The next prime is 12112231112123. The reversal of 12112231112121 is 12121113221121.

12112231112121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12112231112121 - 2²⁷ = 12112096894393 is a prime.

It is a super-2 number, since 2×12112231112121² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 576772910101 = 12112231112121 / (1 + 2 + 1 + 1 + 2 + 2 + 3 + 1 + 1 + 1 + 2 + 1 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12112231112123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288386455030 + ... + 288386455071.

It is an arithmetic number, because the mean of its divisors is an integer number (2307091640408).

Almost surely, 2^{12112231112121} is an apocalyptic number.

It is an amenable number.

12112231112121 is a deficient number, since it is larger than the sum of its proper divisors (6344502011143).

12112231112121 is an equidigital number, since it uses as much as digits as its factorization.

12112231112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576772910111.

The product of its digits is 96, while the sum is 21.

Adding to 12112231112121 its reverse (12121113221121), we get a palindrome (24233344333242).

The spelling of 12112231112121 in words is "twelve trillion, one hundred twelve billion, two hundred thirty-one million, one hundred twelve thousand, one hundred twenty-one".