22021302313 has 4 divisors (see below), whose sum is σ = 22027545940. Its totient is φ = 22015058688.

The previous prime is 22021302301. The next prime is 22021302349. The reversal of 22021302313 is 31320312022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2813559849 + 19207742464 = 53043^2 + 138592^2 .

It is a cyclic number.

It is not a de Polignac number, because 22021302313 - 2²⁹ = 21484431401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22021302353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3116520 + ... + 3123577.

It is an arithmetic number, because the mean of its divisors is an integer number (5506886485).

Almost surely, 2^22021302313 is an apocalyptic number.

It is an amenable number.

22021302313 is a deficient number, since it is larger than the sum of its proper divisors (6243627).

22021302313 is an equidigital number, since it uses as much as digits as its factorization.

22021302313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6243626.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 22021302313 its reverse (31320312022), we get a palindrome (53341614335).

The spelling of 22021302313 in words is "twenty-two billion, twenty-one million, three hundred two thousand, three hundred thirteen".