130125200021 has 2 divisors, whose sum is σ = 130125200022. Its totient is φ = 130125200020.

The previous prime is 130125199973. The next prime is 130125200081. The reversal of 130125200021 is 120002521031.

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., 121305924100 + 8819275921 = 348290^2 + 93911^2 .

It is a cyclic number.

It is not a de Polignac number, because 130125200021 - 2³⁰ = 129051458197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130125200081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65062600010 + 65062600011.

It is an arithmetic number, because the mean of its divisors is an integer number (65062600011).

Almost surely, 2^130125200021 is an apocalyptic number.

It is an amenable number.

130125200021 is a deficient number, since it is larger than the sum of its proper divisors (1).

130125200021 is an equidigital number, since it uses as much as digits as its factorization.

130125200021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 17.

Adding to 130125200021 its reverse (120002521031), we get a palindrome (250127721052).

The spelling of 130125200021 in words is "one hundred thirty billion, one hundred twenty-five million, two hundred thousand, twenty-one".