120021121100 has 18 divisors (see below), whose sum is σ = 260445833004. Its totient is φ = 48008448400.

The previous prime is 120021121067. The next prime is 120021121111. The reversal of 120021121100 is 1121120021.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 600105506 + ... + 600105705.

Almost surely, 2^120021121100 is an apocalyptic number.

120021121100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120021121100 is an abundant number, since it is smaller than the sum of its proper divisors (140424711904).

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

120021121100 is a wasteful number, since it uses less digits than its factorization.

120021121100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200211225 (or 1200211218 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 120021121100 its reverse (1121120021), we get a palindrome (121142241121).

The spelling of 120021121100 in words is "one hundred twenty billion, twenty-one million, one hundred twenty-one thousand, one hundred".