123220113013 has 2 divisors, whose sum is σ = 123220113014. Its totient is φ = 123220113012.

The previous prime is 123220113007. The next prime is 123220113041. The reversal of 123220113013 is 310311022321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79412367204 + 43807745809 = 281802^2 + 209303^2 .

It is a cyclic number.

It is not a de Polignac number, because 123220113013 - 2²⁵ = 123186558581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123220119013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61610056506 + 61610056507.

It is an arithmetic number, because the mean of its divisors is an integer number (61610056507).

Almost surely, 2^123220113013 is an apocalyptic number.

It is an amenable number.

123220113013 is a deficient number, since it is larger than the sum of its proper divisors (1).

123220113013 is an equidigital number, since it uses as much as digits as its factorization.

123220113013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 123220113013 its reverse (310311022321), we get a palindrome (433531135334).

The spelling of 123220113013 in words is "one hundred twenty-three billion, two hundred twenty million, one hundred thirteen thousand, thirteen".