111312210320 has 160 divisors (see below), whose sum is σ = 271801353600. Its totient is φ = 42339483648.

The previous prime is 111312210281. The next prime is 111312210409. The reversal of 111312210320 is 23012213111.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51082991 + ... + 51085169.

It is an arithmetic number, because the mean of its divisors is an integer number (1698758460).

Almost surely, 2^111312210320 is an apocalyptic number.

111312210320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111312210320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135900676800).

111312210320 is an abundant number, since it is smaller than the sum of its proper divisors (160489143280).

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

111312210320 is a wasteful number, since it uses less digits than its factorization.

111312210320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2545 (or 2539 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 111312210320 its reverse (23012213111), we get a palindrome (134324423431).

The spelling of 111312210320 in words is "one hundred eleven billion, three hundred twelve million, two hundred ten thousand, three hundred twenty".