120110021220 has 48 divisors (see below), whose sum is σ = 384352069248. Its totient is φ = 27453719040.

The previous prime is 120110021179. The next prime is 120110021237. The reversal of 120110021220 is 22120011021.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 120110021196 and 120110021205.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142987701 + ... + 142988540.

It is an arithmetic number, because the mean of its divisors is an integer number (8007334776).

Almost surely, 2^120110021220 is an apocalyptic number.

120110021220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120110021220 is an abundant number, since it is smaller than the sum of its proper divisors (264242048028).

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

120110021220 is a wasteful number, since it uses less digits than its factorization.

120110021220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285976260 (or 285976258 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 120110021220 its reverse (22120011021), we get a palindrome (142230032241).

The spelling of 120110021220 in words is "one hundred twenty billion, one hundred ten million, twenty-one thousand, two hundred twenty".