125932221271 has 4 divisors (see below), whose sum is σ = 126075816472. Its totient is φ = 125788626072.

The previous prime is 125932221269. The next prime is 125932221299. The reversal of 125932221271 is 172122239521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 125932221271 - 2¹ = 125932221269 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125932221271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125932221071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71796285 + ... + 71798038.

It is an arithmetic number, because the mean of its divisors is an integer number (31518954118).

Almost surely, 2^125932221271 is an apocalyptic number.

125932221271 is a deficient number, since it is larger than the sum of its proper divisors (143595201).

125932221271 is an equidigital number, since it uses as much as digits as its factorization.

125932221271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143595200.

The product of its digits is 30240, while the sum is 37.

The spelling of 125932221271 in words is "one hundred twenty-five billion, nine hundred thirty-two million, two hundred twenty-one thousand, two hundred seventy-one".