120212100111220 has 24 divisors (see below), whose sum is σ = 271864287944424. Its totient is φ = 44386006194816.

The previous prime is 120212100111143. The next prime is 120212100111223. The reversal of 120212100111220 is 22111001212021.

It can be written as a sum of positive squares in 4 ways, for example, as 1274884875664 + 118937215235556 = 1129108^2 + 10905834^2 .

It is a junction number, because it is equal to n+sod(n) for n = 120212100111194 and 120212100111203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120212100111223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231177115339 + ... + 231177115858.

It is an arithmetic number, because the mean of its divisors is an integer number (11327678664351).

Almost surely, 2^{120212100111220} is an apocalyptic number.

120212100111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120212100111220 is an abundant number, since it is smaller than the sum of its proper divisors (151652187833204).

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

120212100111220 is a wasteful number, since it uses less digits than its factorization.

120212100111220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462354231219 (or 462354231217 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 120212100111220 its reverse (22111001212021), we get a palindrome (142323101323241).

The spelling of 120212100111220 in words is "one hundred twenty trillion, two hundred twelve billion, one hundred million, one hundred eleven thousand, two hundred twenty".