111221203144 has 64 divisors (see below), whose sum is σ = 214968536640. Its totient is φ = 53916468480.

The previous prime is 111221203123. The next prime is 111221203207. The reversal of 111221203144 is 441302122111.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52190959 + ... + 52193089.

It is an arithmetic number, because the mean of its divisors is an integer number (3358883385).

Almost surely, 2^111221203144 is an apocalyptic number.

It is an amenable number.

111221203144 is a deficient number, since it is larger than the sum of its proper divisors (103747333496).

111221203144 is a wasteful number, since it uses less digits than its factorization.

111221203144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3230 (or 3226 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 111221203144 its reverse (441302122111), we get a palindrome (552523325255).

The spelling of 111221203144 in words is "one hundred eleven billion, two hundred twenty-one million, two hundred three thousand, one hundred forty-four".