120021202100 has 18 divisors (see below), whose sum is σ = 260446008774. Its totient is φ = 48008480800.

The previous prime is 120021202097. The next prime is 120021202159. The reversal of 120021202100 is 1202120021.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 32398864 + 119988803236 = 5692^2 + 346394^2 .

It is a congruent number.

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, 600105911 + ... + 600106110.

Almost surely, 2^120021202100 is an apocalyptic number.

120021202100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120021202100 is an abundant number, since it is smaller than the sum of its proper divisors (140424806674).

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

120021202100 is a wasteful number, since it uses less digits than its factorization.

120021202100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200212035 (or 1200212028 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 120021202100 its reverse (1202120021), we get a palindrome (121223322121).

The spelling of 120021202100 in words is "one hundred twenty billion, twenty-one million, two hundred two thousand, one hundred".