120021000120 has 96 divisors (see below), whose sum is σ = 445792295520. Its totient is φ = 27433370880.

The previous prime is 120021000103. The next prime is 120021000167. The reversal of 120021000120 is 21000120021.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23811171 + ... + 23816210.

It is an arithmetic number, because the mean of its divisors is an integer number (4643669745).

Almost surely, 2^120021000120 is an apocalyptic number.

120021000120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120021000120 is an abundant number, since it is smaller than the sum of its proper divisors (325771295400).

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

120021000120 is a wasteful number, since it uses less digits than its factorization.

120021000120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47627405 (or 47627398 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 120021000120 its reverse (21000120021), we get a palindrome (141021120141).

The spelling of 120021000120 in words is "one hundred twenty billion, twenty-one million, one hundred twenty", and thus it is an aban number.