111220200 has 432 divisors, whose sum is σ = 472743180. Its totient is φ = 23224320.

The previous prime is 111220199. The next prime is 111220217. The reversal of 111220200 is 2022111.

It can be written as a sum of positive squares in 6 ways, for example, as 18714276 + 92505924 = 4326^2 + 9618^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 1146552 + ... + 1146648.

Almost surely, 2^111220200 is an apocalyptic number.

111220200 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 111220200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236371590).

111220200 is an abundant number, since it is smaller than the sum of its proper divisors (361522980).

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

111220200 is a wasteful number, since it uses less digits than its factorization.

111220200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 111220200 is about 10546.0988047714. The cubic root of 111220200 is about 480.9071387103.

Adding to 111220200 its reverse (2022111), we get a palindrome (113242311).

It can be divided in two parts, 1112 and 20200, that added together give a palindrome (21312).

The spelling of 111220200 in words is "one hundred eleven million, two hundred twenty thousand, two hundred".