111110112212220 has 288 divisors, whose sum is σ = 389330044399296. Its totient is φ = 25349455872000.

The previous prime is 111110112212219. The next prime is 111110112212221. The reversal of 111110112212220 is 22212211011111.

It is a happy number.

111110112212220 is a `hidden beast` number, since 1 + 11 + 110 + 112 + 212 + 220 = 666.

It is an interprime number because it is at equal distance from previous prime (111110112212219) and next prime (111110112212221).

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 = 111110112212193 and 111110112212202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111110112212221) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 484623052 + ... + 484852268.

It is an arithmetic number, because the mean of its divisors is an integer number (1351840431942).

Almost surely, 2^{111110112212220} is an apocalyptic number.

111110112212220 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 111110112212220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194665022199648).

111110112212220 is an abundant number, since it is smaller than the sum of its proper divisors (278219932187076).

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

111110112212220 is a wasteful number, since it uses less digits than its factorization.

111110112212220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243661 (or 243656 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 111110112212220 its reverse (22212211011111), we get a palindrome (133322323223331).

The spelling of 111110112212220 in words is "one hundred eleven trillion, one hundred ten billion, one hundred twelve million, two hundred twelve thousand, two hundred twenty".