111221010200 has 24 divisors (see below), whose sum is σ = 258588849180. Its totient is φ = 44488404000.

The previous prime is 111221010181. The next prime is 111221010209. The reversal of 111221010200 is 2010122111.

It is a super-2 number, since 2×111221010200² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111221010209) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 278052326 + ... + 278052725.

Almost surely, 2^111221010200 is an apocalyptic number.

111221010200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111221010200 is an abundant number, since it is smaller than the sum of its proper divisors (147367838980).

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

111221010200 is a wasteful number, since it uses less digits than its factorization.

111221010200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556105067 (or 556105058 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 111221010200 its reverse (2010122111), we get a palindrome (113231132311).

The spelling of 111221010200 in words is "one hundred eleven billion, two hundred twenty-one million, ten thousand, two hundred".