111112210220120 has 128 divisors (see below), whose sum is σ = 256139513720640. Its totient is φ = 43356494039040.

The previous prime is 111112210220059. The next prime is 111112210220131. The reversal of 111112210220120 is 21022012211111.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6506533022 + ... + 6506550098.

Almost surely, 2^{111112210220120} is an apocalyptic number.

111112210220120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111112210220120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128069756860320).

111112210220120 is an abundant number, since it is smaller than the sum of its proper divisors (145027303500520).

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

111112210220120 is a wasteful number, since it uses less digits than its factorization.

111112210220120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21685 (or 21681 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 111112210220120 its reverse (21022012211111), we get a palindrome (132134222431231).

The spelling of 111112210220120 in words is "one hundred eleven trillion, one hundred twelve billion, two hundred ten million, two hundred twenty thousand, one hundred twenty".