111200221200 has 120 divisors (see below), whose sum is σ = 356405501088. Its totient is φ = 29637232640.

The previous prime is 111200221163. The next prime is 111200221207. The reversal of 111200221200 is 2122002111.

It is a tau number, because it is divible by the number of its divisors (120).

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

It is not an unprimeable number, because it can be changed into a prime (111200221207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2264104 + ... + 2312696.

Almost surely, 2^111200221200 is an apocalyptic number.

111200221200 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 111200221200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178202750544).

111200221200 is an abundant number, since it is smaller than the sum of its proper divisors (245205279888).

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

111200221200 is a wasteful number, since it uses less digits than its factorization.

111200221200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50521 (or 50510 counting only the distinct ones).

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

Adding to 111200221200 its reverse (2122002111), we get a palindrome (113322223311).

The spelling of 111200221200 in words is "one hundred eleven billion, two hundred million, two hundred twenty-one thousand, two hundred".