129272195227 has 32 divisors (see below), whose sum is σ = 150378905600. Its totient is φ = 108847071648.

The previous prime is 129272195207. The next prime is 129272195249. The reversal of 129272195227 is 722591272921.

It is not a de Polignac number, because 129272195227 - 2⁷ = 129272195099 is a prime.

It is a super-2 number, since 2×129272195227² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (129272195207) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54246478 + ... + 54248860.

It is an arithmetic number, because the mean of its divisors is an integer number (4699340800).

Almost surely, 2^129272195227 is an apocalyptic number.

129272195227 is a deficient number, since it is larger than the sum of its proper divisors (21106710373).

129272195227 is a wasteful number, since it uses less digits than its factorization.

129272195227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3095.

The product of its digits is 635040, while the sum is 49.

The spelling of 129272195227 in words is "one hundred twenty-nine billion, two hundred seventy-two million, one hundred ninety-five thousand, two hundred twenty-seven".