120021111200 has 72 divisors (see below), whose sum is σ = 297804962700. Its totient is φ = 47221401600.

The previous prime is 120021111173. The next prime is 120021111211. The reversal of 120021111200 is 2111120021.

It can be written as a sum of positive squares in 6 ways, for example, as 20233355536 + 99787755664 = 142244^2 + 315892^2 .

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, 1180925 + ... + 1278524.

Almost surely, 2^120021111200 is an apocalyptic number.

120021111200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120021111200 is an abundant number, since it is smaller than the sum of its proper divisors (177783851500).

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

120021111200 is a wasteful number, since it uses less digits than its factorization.

120021111200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2459530 (or 2459517 counting only the distinct ones).

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

Adding to 120021111200 its reverse (2111120021), we get a palindrome (122132231221).

The spelling of 120021111200 in words is "one hundred twenty billion, twenty-one million, one hundred eleven thousand, two hundred".