12122312013 has 80 divisors (see below), whose sum is σ = 21425479680. Its totient is φ = 6684055200.

The previous prime is 12122311997. The next prime is 12122312039. The reversal of 12122312013 is 31021322121.

It is not a de Polignac number, because 12122312013 - 2⁴ = 12122311997 is a prime.

It is a super-2 number, since 2×12122312013² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122312053) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 7715518 + ... + 7717088.

It is an arithmetic number, because the mean of its divisors is an integer number (267818496).

Almost surely, 2^12122312013 is an apocalyptic number.

It is an amenable number.

12122312013 is a deficient number, since it is larger than the sum of its proper divisors (9303167667).

12122312013 is a wasteful number, since it uses less digits than its factorization.

12122312013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2060 (or 2051 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 12122312013 its reverse (31021322121), we get a palindrome (43143634134).

The spelling of 12122312013 in words is "twelve billion, one hundred twenty-two million, three hundred twelve thousand, thirteen".