111100201200 has 90 divisors (see below), whose sum is σ = 385548571824. Its totient is φ = 29626719360.

The previous prime is 111100201169. The next prime is 111100201297. The reversal of 111100201200 is 2102001111.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (90).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 15426984 + ... + 15434183.

Almost surely, 2^111100201200 is an apocalyptic number.

111100201200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111100201200 is an abundant number, since it is smaller than the sum of its proper divisors (274448370624).

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

111100201200 is a wasteful number, since it uses less digits than its factorization.

111100201200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30861191 (or 30861177 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 111100201200 its reverse (2102001111), we get a palindrome (113202202311).

The spelling of 111100201200 in words is "one hundred eleven billion, one hundred million, two hundred one thousand, two hundred".