129522699 has 16 divisors (see below), whose sum is σ = 192086400. Its totient is φ = 86258088.

The previous prime is 129522691. The next prime is 129522727. The reversal of 129522699 is 996225921.

It is not a de Polignac number, because 129522699 - 2³ = 129522691 is a prime.

It is a super-2 number, since 2×129522699² = 33552259112489202, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (129522691) 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, 32772 + ... + 36510.

It is an arithmetic number, because the mean of its divisors is an integer number (12005400).

Almost surely, 2^129522699 is an apocalyptic number.

129522699 is a deficient number, since it is larger than the sum of its proper divisors (62563701).

129522699 is a wasteful number, since it uses less digits than its factorization.

129522699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5031 (or 5025 counting only the distinct ones).

The product of its digits is 174960, while the sum is 45.

The square root of 129522699 is about 11380.8039698433. The cubic root of 129522699 is about 505.9589646819.

It can be divided in two parts, 12952 and 2699, that added together give a palindrome (15651).

The spelling of 129522699 in words is "one hundred twenty-nine million, five hundred twenty-two thousand, six hundred ninety-nine".