22021312313 has 96 divisors (see below), whose sum is σ = 31322712960. Its totient is φ = 15200317440.

The previous prime is 22021312309. The next prime is 22021312337. The reversal of 22021312313 is 31321312022.

It is not a de Polignac number, because 22021312313 - 2² = 22021312309 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22021312343) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 62383145 + ... + 62383497.

It is an arithmetic number, because the mean of its divisors is an integer number (326278260).

Almost surely, 2^22021312313 is an apocalyptic number.

It is an amenable number.

22021312313 is a deficient number, since it is larger than the sum of its proper divisors (9301400647).

22021312313 is a wasteful number, since it uses less digits than its factorization.

22021312313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727 (or 720 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 22021312313 its reverse (31321312022), we get a palindrome (53342624335).

The spelling of 22021312313 in words is "twenty-two billion, twenty-one million, three hundred twelve thousand, three hundred thirteen".