122808013 has 2 divisors, whose sum is σ = 122808014. Its totient is φ = 122808012.

The previous prime is 122807989. The next prime is 122808047. The reversal of 122808013 is 310808221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114639849 + 8168164 = 10707^2 + 2858^2 .

It is a cyclic number.

It is not a de Polignac number, because 122808013 - 2⁵ = 122807981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122808083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61404006 + 61404007.

It is an arithmetic number, because the mean of its divisors is an integer number (61404007).

Almost surely, 2^122808013 is an apocalyptic number.

It is an amenable number.

122808013 is a deficient number, since it is larger than the sum of its proper divisors (1).

122808013 is an equidigital number, since it uses as much as digits as its factorization.

122808013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 122808013 is about 11081.8776838585. The cubic root of 122808013 is about 497.0600985046.

The spelling of 122808013 in words is "one hundred twenty-two million, eight hundred eight thousand, thirteen".