111200111220 has 48 divisors (see below), whose sum is σ = 339665796288. Its totient is φ = 26957602560.

The previous prime is 111200111213. The next prime is 111200111249. The reversal of 111200111220 is 22111002111.

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

It is a junction number, because it is equal to n+sod(n) for n = 111200111196 and 111200111205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84241849 + ... + 84243168.

It is an arithmetic number, because the mean of its divisors is an integer number (7076370756).

Almost surely, 2^111200111220 is an apocalyptic number.

111200111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111200111220 is an abundant number, since it is smaller than the sum of its proper divisors (228465685068).

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

111200111220 is a wasteful number, since it uses less digits than its factorization.

111200111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168485040 (or 168485038 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 111200111220 its reverse (22111002111), we get a palindrome (133311113331).

The spelling of 111200111220 in words is "one hundred eleven billion, two hundred million, one hundred eleven thousand, two hundred twenty".