111220120220200 has 96 divisors (see below), whose sum is σ = 264102552604800. Its totient is φ = 43539197719040.

The previous prime is 111220120220159. The next prime is 111220120220219. The reversal of 111220120220200 is 2022021022111.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 183721611 + ... + 184325989.

It is an arithmetic number, because the mean of its divisors is an integer number (2751068256300).

Almost surely, 2^{111220120220200} is an apocalyptic number.

111220120220200 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 111220120220200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132051276302400).

111220120220200 is an abundant number, since it is smaller than the sum of its proper divisors (152882432384600).

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

111220120220200 is a wasteful number, since it uses less digits than its factorization.

111220120220200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624019 (or 624010 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 111220120220200 its reverse (2022021022111), we get a palindrome (113242141242311).

The spelling of 111220120220200 in words is "one hundred eleven trillion, two hundred twenty billion, one hundred twenty million, two hundred twenty thousand, two hundred".