120021111112220 has 48 divisors (see below), whose sum is σ = 252314340139008. Its totient is φ = 47957031470400.

The previous prime is 120021111112181. The next prime is 120021111112289. The reversal of 120021111112220 is 22211111120021.

It is a super-2 number, since 2×120021111112220² (a number of 29 digits) contains 22 as substring.

It is a congruent 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, 113815499 + ... + 114865181.

It is an arithmetic number, because the mean of its divisors is an integer number (5256548752896).

Almost surely, 2^{120021111112220} is an apocalyptic number.

120021111112220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120021111112220 is an abundant number, since it is smaller than the sum of its proper divisors (132293229026788).

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

120021111112220 is a wasteful number, since it uses less digits than its factorization.

120021111112220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055810 (or 1055808 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 120021111112220 its reverse (22211111120021), we get a palindrome (142232222232241).

The spelling of 120021111112220 in words is "one hundred twenty trillion, twenty-one billion, one hundred eleven million, one hundred twelve thousand, two hundred twenty".