120100021100 has 72 divisors (see below), whose sum is σ = 261840116160. Its totient is φ = 47814972480.

The previous prime is 120100021031. The next prime is 120100021123. The reversal of 120100021100 is 1120001021.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31779011 + ... + 31782789.

It is an arithmetic number, because the mean of its divisors is an integer number (3636668280).

Almost surely, 2^120100021100 is an apocalyptic number.

120100021100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120100021100 is an abundant number, since it is smaller than the sum of its proper divisors (141740095060).

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

120100021100 is a wasteful number, since it uses less digits than its factorization.

120100021100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5199 (or 5192 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 120100021100 its reverse (1120001021), we get a palindrome (121220022121).

The spelling of 120100021100 in words is "one hundred twenty billion, one hundred million, twenty-one thousand, one hundred".