12123113013 has 24 divisors (see below), whose sum is σ = 19115269056. Its totient is φ = 7342656000.

The previous prime is 12123112979. The next prime is 12123113021. The reversal of 12123113013 is 31031132121.

It is not a de Polignac number, because 12123113013 - 2¹² = 12123108917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12123113113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 120256 + ... + 196742.

It is an arithmetic number, because the mean of its divisors is an integer number (796469544).

Almost surely, 2^12123113013 is an apocalyptic number.

It is an amenable number.

12123113013 is a deficient number, since it is larger than the sum of its proper divisors (6992156043).

12123113013 is a wasteful number, since it uses less digits than its factorization.

12123113013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78105 (or 78102 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 12123113013 its reverse (31031132121), we get a palindrome (43154245134).

The spelling of 12123113013 in words is "twelve billion, one hundred twenty-three million, one hundred thirteen thousand, thirteen".