111201221221120 has 36 divisors (see below), whose sum is σ = 266361675209280. Its totient is φ = 44480488487936.

The previous prime is 111201221221109. The next prime is 111201221221133. The reversal of 111201221221120 is 21122122102111.

It is a happy number.

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 3 ways as a sum of consecutive naturals, for example, 43437975760 + ... + 43437978319.

It is an arithmetic number, because the mean of its divisors is an integer number (7398935422480).

Almost surely, 2^{111201221221120} is an apocalyptic number.

111201221221120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111201221221120 is an abundant number, since it is smaller than the sum of its proper divisors (155160453988160).

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

111201221221120 is an frugal number, since it uses more digits than its factorization.

111201221221120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86875954100 (or 86875954086 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 111201221221120 its reverse (21122122102111), we get a palindrome (132323343323231).

The spelling of 111201221221120 in words is "one hundred eleven trillion, two hundred one billion, two hundred twenty-one million, two hundred twenty-one thousand, one hundred twenty".