111220221212200 has 96 divisors (see below), whose sum is σ = 267551971783200. Its totient is φ = 42946282632960.

The previous prime is 111220221212167. The next prime is 111220221212273. The reversal of 111220221212200 is 2212122022111.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30541879 + ... + 33988921.

It is an arithmetic number, because the mean of its divisors is an integer number (2786999706075).

Almost surely, 2^{111220221212200} is an apocalyptic number.

111220221212200 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 111220221212200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133775985891600).

111220221212200 is an abundant number, since it is smaller than the sum of its proper divisors (156331750571000).

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

111220221212200 is a wasteful number, since it uses less digits than its factorization.

111220221212200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3452651 (or 3452642 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 111220221212200 its reverse (2212122022111), we get a palindrome (113432343234311).

The spelling of 111220221212200 in words is "one hundred eleven trillion, two hundred twenty billion, two hundred twenty-one million, two hundred twelve thousand, two hundred".