100120504172 has 24 divisors (see below), whose sum is σ = 188739474000. Its totient is φ = 46197014976.

The previous prime is 100120504163. The next prime is 100120504189. The reversal of 100120504172 is 271405021001.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63047 + ... + 451902.

It is an arithmetic number, because the mean of its divisors is an integer number (7864144750).

Almost surely, 2^100120504172 is an apocalyptic number.

It is an amenable number.

100120504172 is a deficient number, since it is larger than the sum of its proper divisors (88618969828).

100120504172 is a wasteful number, since it uses less digits than its factorization.

100120504172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518705 (or 518703 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 23.

Adding to 100120504172 its reverse (271405021001), we get a palindrome (371525525173).

The spelling of 100120504172 in words is "one hundred billion, one hundred twenty million, five hundred four thousand, one hundred seventy-two".