111311223100 has 288 divisors, whose sum is σ = 309805171200. Its totient is φ = 33710899200.

The previous prime is 111311223077. The next prime is 111311223109. The reversal of 111311223100 is 1322113111.

It is a happy number.

111311223100 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 2×111311223100² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111311223109) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 40431324 + ... + 40434076.

It is an arithmetic number, because the mean of its divisors is an integer number (1075712400).

Almost surely, 2^111311223100 is an apocalyptic number.

111311223100 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 111311223100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154902585600).

111311223100 is an abundant number, since it is smaller than the sum of its proper divisors (198493948100).

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

111311223100 is a wasteful number, since it uses less digits than its factorization.

111311223100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2933 (or 2926 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 111311223100 its reverse (1322113111), we get a palindrome (112633336211).

The spelling of 111311223100 in words is "one hundred eleven billion, three hundred eleven million, two hundred twenty-three thousand, one hundred".