13129995227 has 4 divisors (see below), whose sum is σ = 13377731040. Its totient is φ = 12882259416.

The previous prime is 13129995191. The next prime is 13129995289. The reversal of 13129995227 is 72259992131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72259992131 = 33601 ⋅2150531.

It is a cyclic number.

It is not a de Polignac number, because 13129995227 - 2⁸ = 13129994971 is a prime.

It is a super-2 number, since 2×13129995227² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13129991227) 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, 123867827 + ... + 123867932.

It is an arithmetic number, because the mean of its divisors is an integer number (3344432760).

Almost surely, 2^13129995227 is an apocalyptic number.

13129995227 is a deficient number, since it is larger than the sum of its proper divisors (247735813).

13129995227 is an equidigital number, since it uses as much as digits as its factorization.

13129995227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247735812.

The product of its digits is 612360, while the sum is 50.

The spelling of 13129995227 in words is "thirteen billion, one hundred twenty-nine million, nine hundred ninety-five thousand, two hundred twenty-seven".