111221102121200 has 60 divisors (see below), whose sum is σ = 267245781045840. Its totient is φ = 44482266746880.

The previous prime is 111221102121187. The next prime is 111221102121253. The reversal of 111221102121200 is 2121201122111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16407665 + ... + 22173264.

It is an arithmetic number, because the mean of its divisors is an integer number (4454096350764).

Almost surely, 2^{111221102121200} is an apocalyptic number.

111221102121200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111221102121200 is an abundant number, since it is smaller than the sum of its proper divisors (156024678924640).

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

111221102121200 is a wasteful number, since it uses less digits than its factorization.

111221102121200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38588154 (or 38588143 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 111221102121200 its reverse (2121201122111), we get a palindrome (113342303243311).

The spelling of 111221102121200 in words is "one hundred eleven trillion, two hundred twenty-one billion, one hundred two million, one hundred twenty-one thousand, two hundred".