111320312100 has 144 divisors (see below), whose sum is σ = 325510624320. Its totient is φ = 29371507200.

The previous prime is 111320312093. The next prime is 111320312111. The reversal of 111320312100 is 1213023111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 111320312100.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11193130 + ... + 11203070.

Almost surely, 2^111320312100 is an apocalyptic number.

111320312100 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 111320312100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162755312160).

111320312100 is an abundant number, since it is smaller than the sum of its proper divisors (214190312220).

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

111320312100 is a wasteful number, since it uses less digits than its factorization.

111320312100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10350 (or 10343 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 111320312100 its reverse (1213023111), we get a palindrome (112533335211).

The spelling of 111320312100 in words is "one hundred eleven billion, three hundred twenty million, three hundred twelve thousand, one hundred".