111311211320 has 16 divisors (see below), whose sum is σ = 250450225560. Its totient is φ = 44524484512.

The previous prime is 111311211311. The next prime is 111311211367. The reversal of 111311211320 is 23112113111.

111311211320 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×111311211320² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1391390102 + ... + 1391390181.

Almost surely, 2^111311211320 is an apocalyptic number.

111311211320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111311211320 is an abundant number, since it is smaller than the sum of its proper divisors (139139014240).

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

111311211320 is a wasteful number, since it uses less digits than its factorization.

111311211320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2782780294 (or 2782780290 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 111311211320 its reverse (23112113111), we get a palindrome (134423324431).

The spelling of 111311211320 in words is "one hundred eleven billion, three hundred eleven million, two hundred eleven thousand, three hundred twenty".