111101120211220 has 24 divisors (see below), whose sum is σ = 234331183686600. Its totient is φ = 44246384990592.

The previous prime is 111101120211149. The next prime is 111101120211239. The reversal of 111101120211220 is 22112021101111.

It can be written as a sum of positive squares in 4 ways, for example, as 18464999656464 + 92636120554756 = 4297092^2 + 9624766^2 .

It is a junction number, because it is equal to n+sod(n) for n = 111101120211194 and 111101120211203.

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, 12128938675 + ... + 12128947834.

It is an arithmetic number, because the mean of its divisors is an integer number (9763799320275).

Almost surely, 2^{111101120211220} is an apocalyptic number.

111101120211220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111101120211220 is an abundant number, since it is smaller than the sum of its proper divisors (123230063475380).

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

111101120211220 is a wasteful number, since it uses less digits than its factorization.

111101120211220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24257886747 (or 24257886745 counting only the distinct ones).

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

Adding to 111101120211220 its reverse (22112021101111), we get a palindrome (133213141312331).

The spelling of 111101120211220 in words is "one hundred eleven trillion, one hundred one billion, one hundred twenty million, two hundred eleven thousand, two hundred twenty".