122125025213 has 2 divisors, whose sum is σ = 122125025214. Its totient is φ = 122125025212.

The previous prime is 122125025203. The next prime is 122125025287. The reversal of 122125025213 is 312520521221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106238187364 + 15886837849 = 325942^2 + 126043^2 .

It is a cyclic number.

It is not a de Polignac number, because 122125025213 - 2²⁴ = 122108247997 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122125025203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61062512606 + 61062512607.

It is an arithmetic number, because the mean of its divisors is an integer number (61062512607).

Almost surely, 2^122125025213 is an apocalyptic number.

It is an amenable number.

122125025213 is a deficient number, since it is larger than the sum of its proper divisors (1).

122125025213 is an equidigital number, since it uses as much as digits as its factorization.

122125025213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 122125025213 its reverse (312520521221), we get a palindrome (434645546434).

The spelling of 122125025213 in words is "one hundred twenty-two billion, one hundred twenty-five million, twenty-five thousand, two hundred thirteen".