125322435221 has 4 divisors (see below), whose sum is σ = 125343179712. Its totient is φ = 125301690732.

The previous prime is 125322435163. The next prime is 125322435253. The reversal of 125322435221 is 122534223521.

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, and also an emirpimes, since its reverse is a distinct semiprime: 122534223521 = 19 ⋅6449169659.

It is a cyclic number.

It is not a de Polignac number, because 125322435221 - 2⁶ = 125322435157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125322438221) 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, 10363181 + ... + 10375266.

It is an arithmetic number, because the mean of its divisors is an integer number (31335794928).

Almost surely, 2^125322435221 is an apocalyptic number.

It is an amenable number.

125322435221 is a deficient number, since it is larger than the sum of its proper divisors (20744491).

125322435221 is an equidigital number, since it uses as much as digits as its factorization.

125322435221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20744490.

The product of its digits is 28800, while the sum is 32.

Adding to 125322435221 its reverse (122534223521), we get a palindrome (247856658742).

The spelling of 125322435221 in words is "one hundred twenty-five billion, three hundred twenty-two million, four hundred thirty-five thousand, two hundred twenty-one".