129029901100 has 36 divisors (see below), whose sum is σ = 292168581264. Its totient is φ = 49367961280.

The previous prime is 129029901097. The next prime is 129029901131. The reversal of 129029901100 is 1109920921.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28047679 + ... + 28052278.

It is an arithmetic number, because the mean of its divisors is an integer number (8115793924).

Almost surely, 2^129029901100 is an apocalyptic number.

129029901100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129029901100 is an abundant number, since it is smaller than the sum of its proper divisors (163138680164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129029901100 is a wasteful number, since it uses less digits than its factorization.

129029901100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56099994 (or 56099987 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 34.

The spelling of 129029901100 in words is "one hundred twenty-nine billion, twenty-nine million, nine hundred one thousand, one hundred".