120021221101220 has 48 divisors (see below), whose sum is σ = 255616333459200. Its totient is φ = 47328267047040.

The previous prime is 120021221101217. The next prime is 120021221101343. The reversal of 120021221101220 is 22101122120021.

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, 13034786 + ... + 20247174.

It is an arithmetic number, because the mean of its divisors is an integer number (5325340280400).

Almost surely, 2^{120021221101220} is an apocalyptic number.

120021221101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120021221101220 is an abundant number, since it is smaller than the sum of its proper divisors (135595112357980).

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

120021221101220 is a wasteful number, since it uses less digits than its factorization.

120021221101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7224188 (or 7224186 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 120021221101220 its reverse (22101122120021), we get a palindrome (142122343221241).

The spelling of 120021221101220 in words is "one hundred twenty trillion, twenty-one billion, two hundred twenty-one million, one hundred one thousand, two hundred twenty".