22121320312013 has 16 divisors (see below), whose sum is σ = 24228339844800. Its totient is φ = 20072257868160.

The previous prime is 22121320311991. The next prime is 22121320312057. The reversal of 22121320312013 is 31021302312122.

It is a cyclic number.

It is not a de Polignac number, because 22121320312013 - 2²⁴ = 22121303534797 is a prime.

It is a super-2 number, since 2×22121320312013² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22121320312013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121320312913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10758593 + ... + 12648713.

It is an arithmetic number, because the mean of its divisors is an integer number (1514271240300).

Almost surely, 2^{22121320312013} is an apocalyptic number.

It is an amenable number.

22121320312013 is a deficient number, since it is larger than the sum of its proper divisors (2107019532787).

22121320312013 is a wasteful number, since it uses less digits than its factorization.

22121320312013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1905452.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 22121320312013 its reverse (31021302312122), we get a palindrome (53142622624135).

The spelling of 22121320312013 in words is "twenty-two trillion, one hundred twenty-one billion, three hundred twenty million, three hundred twelve thousand, thirteen".