111220211200 has 240 divisors, whose sum is σ = 316570836384. Its totient is φ = 37933056000.

The previous prime is 111220211191. The next prime is 111220211209. The reversal of 111220211200 is 2112022111.

It is an interprime number because it is at equal distance from previous prime (111220211191) and next prime (111220211209).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111220211209) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 17648050 + ... + 17654350.

Almost surely, 2^111220211200 is an apocalyptic number.

111220211200 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 111220211200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158285418192).

111220211200 is an abundant number, since it is smaller than the sum of its proper divisors (205350625184).

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

111220211200 is an equidigital number, since it uses as much as digits as its factorization.

111220211200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6533 (or 6512 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 111220211200 its reverse (2112022111), we get a palindrome (113332233311).

The spelling of 111220211200 in words is "one hundred eleven billion, two hundred twenty million, two hundred eleven thousand, two hundred".