120102001220 has 48 divisors (see below), whose sum is σ = 264756135168. Its totient is φ = 45676878720.

The previous prime is 120102001211. The next prime is 120102001267. The reversal of 120102001220 is 22100201021.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 704891 + ... + 858530.

It is an arithmetic number, because the mean of its divisors is an integer number (5515752816).

Almost surely, 2^120102001220 is an apocalyptic number.

120102001220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120102001220 is an abundant number, since it is smaller than the sum of its proper divisors (144654133948).

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

120102001220 is a wasteful number, since it uses less digits than its factorization.

120102001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563620 (or 1563618 counting only the distinct ones).

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

Adding to 120102001220 its reverse (22100201021), we get a palindrome (142202202241).

The spelling of 120102001220 in words is "one hundred twenty billion, one hundred two million, one thousand, two hundred twenty".