120021002120 has 64 divisors (see below), whose sum is σ = 281852161920. Its totient is φ = 45910695424.

The previous prime is 120021002119. The next prime is 120021002177. The reversal of 120021002120 is 21200120021.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4971599 + ... + 4995681.

It is an arithmetic number, because the mean of its divisors is an integer number (4403940030).

Almost surely, 2^120021002120 is an apocalyptic number.

120021002120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120021002120 is an abundant number, since it is smaller than the sum of its proper divisors (161831159800).

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

120021002120 is a wasteful number, since it uses less digits than its factorization.

120021002120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29534 (or 29530 counting only the distinct ones).

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

Adding to 120021002120 its reverse (21200120021), we get a palindrome (141221122141).

The spelling of 120021002120 in words is "one hundred twenty billion, twenty-one million, two thousand, one hundred twenty".