120100011220 has 24 divisors (see below), whose sum is σ = 288240027264. Its totient is φ = 41177146656.

The previous prime is 120100011217. The next prime is 120100011233. The reversal of 120100011220 is 22110001021.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 120100011197 and 120100011206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 428928472 + ... + 428928751.

It is an arithmetic number, because the mean of its divisors is an integer number (12010001136).

Almost surely, 2^120100011220 is an apocalyptic number.

120100011220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120100011220 is an abundant number, since it is smaller than the sum of its proper divisors (168140016044).

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

120100011220 is a wasteful number, since it uses less digits than its factorization.

120100011220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857857239 (or 857857237 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 120100011220 its reverse (22110001021), we get a palindrome (142210012241).

The spelling of 120100011220 in words is "one hundred twenty billion, one hundred million, eleven thousand, two hundred twenty".