12113112123 has 48 divisors (see below), whose sum is σ = 21345292800. Its totient is φ = 6465070080.

The previous prime is 12113112113. The next prime is 12113112131. The reversal of 12113112123 is 32121131121.

It is not a de Polignac number, because 12113112123 - 2⁵ = 12113112091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12113112096 and 12113112105.

It is not an unprimeable number, because it can be changed into a prime (12113112113) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13723 + ... + 156251.

It is an arithmetic number, because the mean of its divisors is an integer number (444693600).

Almost surely, 2^12113112123 is an apocalyptic number.

12113112123 is a deficient number, since it is larger than the sum of its proper divisors (9232180677).

12113112123 is a wasteful number, since it uses less digits than its factorization.

12113112123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142632 (or 142629 counting only the distinct ones).

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

Adding to 12113112123 its reverse (32121131121), we get a palindrome (44234243244).

The spelling of 12113112123 in words is "twelve billion, one hundred thirteen million, one hundred twelve thousand, one hundred twenty-three".