111221312320 has 56 divisors (see below), whose sum is σ = 278785015200. Its totient is φ = 42147021312.

The previous prime is 111221312317. The next prime is 111221312353. The reversal of 111221312320 is 23213122111.

111221312320 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 9140410 + ... + 9152569.

Almost surely, 2^111221312320 is an apocalyptic number.

111221312320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111221312320 is an abundant number, since it is smaller than the sum of its proper divisors (167563702880).

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

111221312320 is a wasteful number, since it uses less digits than its factorization.

111221312320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18293015 (or 18293005 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 111221312320 its reverse (23213122111), we get a palindrome (134434434431).

The spelling of 111221312320 in words is "one hundred eleven billion, two hundred twenty-one million, three hundred twelve thousand, three hundred twenty".