120021122021220 has 72 divisors (see below), whose sum is σ = 416073223011264. Its totient is φ = 27433399318848.

The previous prime is 120021122021147. The next prime is 120021122021221. The reversal of 120021122021220 is 22120221120021.

It is a happy number.

120021122021220 is a `hidden beast` number, since 1 + 2 + 0 + 0 + 211 + 220 + 212 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 120021122021193 and 120021122021202.

It is not an unprimeable number, because it can be changed into a prime (120021122021221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47627428114 + ... + 47627430633.

Almost surely, 2^{120021122021220} is an apocalyptic number.

120021122021220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120021122021220 is an abundant number, since it is smaller than the sum of its proper divisors (296052100990044).

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

120021122021220 is a wasteful number, since it uses less digits than its factorization.

120021122021220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95254858769 (or 95254858764 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 120021122021220 its reverse (22120221120021), we get a palindrome (142141343141241).

The spelling of 120021122021220 in words is "one hundred twenty trillion, twenty-one billion, one hundred twenty-two million, twenty-one thousand, two hundred twenty".