120121221200 has 30 divisors (see below), whose sum is σ = 288591234894. Its totient is φ = 48048488320.

The previous prime is 120121221139. The next prime is 120121221211. The reversal of 120121221200 is 2122121021.

It can be written as a sum of positive squares in 3 ways, for example, as 19152345664 + 100968875536 = 138392^2 + 317756^2 .

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, 150151127 + ... + 150151926.

Almost surely, 2^120121221200 is an apocalyptic number.

120121221200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120121221200 is an abundant number, since it is smaller than the sum of its proper divisors (168470013694).

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

120121221200 is a wasteful number, since it uses less digits than its factorization.

120121221200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300303071 (or 300303060 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 120121221200 its reverse (2122121021), we get a palindrome (122243342221).

The spelling of 120121221200 in words is "one hundred twenty billion, one hundred twenty-one million, two hundred twenty-one thousand, two hundred".