111220102200 has 192 divisors, whose sum is σ = 348112005120. Its totient is φ = 29373696000.

The previous prime is 111220102181. The next prime is 111220102241. The reversal of 111220102200 is 2201022111.

It is a super-2 number, since 2×111220102200² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 27616587 + ... + 27620613.

It is an arithmetic number, because the mean of its divisors is an integer number (1813083360).

Almost surely, 2^111220102200 is an apocalyptic number.

111220102200 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 111220102200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174056002560).

111220102200 is an abundant number, since it is smaller than the sum of its proper divisors (236891902920).

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

111220102200 is a wasteful number, since it uses less digits than its factorization.

111220102200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4478 (or 4469 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 111220102200 its reverse (2201022111), we get a palindrome (113421124311).

The spelling of 111220102200 in words is "one hundred eleven billion, two hundred twenty million, one hundred two thousand, two hundred".