129217533922 has 16 divisors (see below), whose sum is σ = 204136496640. Its totient is φ = 61175662128.

The previous prime is 129217533889. The next prime is 129217533923. The reversal of 129217533922 is 229335712921.

It is not an unprimeable number, because it can be changed into a prime (129217533923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 834498 + ... + 977149.

It is an arithmetic number, because the mean of its divisors is an integer number (12758531040).

Almost surely, 2^129217533922 is an apocalyptic number.

129217533922 is a deficient number, since it is larger than the sum of its proper divisors (74918962718).

129217533922 is a wasteful number, since it uses less digits than its factorization.

129217533922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1813545.

The product of its digits is 408240, while the sum is 46.

The spelling of 129217533922 in words is "one hundred twenty-nine billion, two hundred seventeen million, five hundred thirty-three thousand, nine hundred twenty-two".