129271831884213 has 16 divisors (see below), whose sum is σ = 172387738022976. Its totient is φ = 86168574385280.

The previous prime is 129271831884199. The next prime is 129271831884241. The reversal of 129271831884213 is 312488138172921.

It is a cyclic number.

It is not a de Polignac number, because 129271831884213 - 2¹⁸ = 129271831622069 is a prime.

It is a super-2 number, since 2×129271831884213² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129271831784213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 684452170 + ... + 684641012.

It is an arithmetic number, because the mean of its divisors is an integer number (10774233626436).

Almost surely, 2^{129271831884213} is an apocalyptic number.

It is an amenable number.

129271831884213 is a deficient number, since it is larger than the sum of its proper divisors (43115906138763).

129271831884213 is a wasteful number, since it uses less digits than its factorization.

129271831884213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221124.

The product of its digits is 9289728, while the sum is 60.

The spelling of 129271831884213 in words is "one hundred twenty-nine trillion, two hundred seventy-one billion, eight hundred thirty-one million, eight hundred eighty-four thousand, two hundred thirteen".