20313122220113 has 4 divisors (see below), whose sum is σ = 20313170452848. Its totient is φ = 20313073987380.

The previous prime is 20313122220109. The next prime is 20313122220119. The reversal of 20313122220113 is 31102222131302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20313122220113 - 2² = 20313122220109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20313122220119) 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, 23479031 + ... + 24328812.

It is an arithmetic number, because the mean of its divisors is an integer number (5078292613212).

Almost surely, 2^{20313122220113} is an apocalyptic number.

It is an amenable number.

20313122220113 is a deficient number, since it is larger than the sum of its proper divisors (48232735).

20313122220113 is an equidigital number, since it uses as much as digits as its factorization.

20313122220113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48232734.

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

Adding to 20313122220113 its reverse (31102222131302), we get a palindrome (51415344351415).

The spelling of 20313122220113 in words is "twenty trillion, three hundred thirteen billion, one hundred twenty-two million, two hundred twenty thousand, one hundred thirteen".