12122222013 has 72 divisors (see below), whose sum is σ = 20265650496. Its totient is φ = 6963559680.

The previous prime is 12122221981. The next prime is 12122222027. The reversal of 12122222013 is 31022222121.

It is not a de Polignac number, because 12122222013 - 2⁵ = 12122221981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122222213) 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 71 ways as a sum of consecutive naturals, for example, 2828170 + ... + 2832452.

It is an arithmetic number, because the mean of its divisors is an integer number (281467368).

Almost surely, 2^12122222013 is an apocalyptic number.

It is an amenable number.

12122222013 is a deficient number, since it is larger than the sum of its proper divisors (8143428483).

12122222013 is a wasteful number, since it uses less digits than its factorization.

12122222013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4447 (or 4433 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 12122222013 its reverse (31022222121), we get a palindrome (43144444134).

The spelling of 12122222013 in words is "twelve billion, one hundred twenty-two million, two hundred twenty-two thousand, thirteen".