111311030220 has 384 divisors, whose sum is σ = 362734848000. Its totient is φ = 25259655168.

The previous prime is 111311030213. The next prime is 111311030261. The reversal of 111311030220 is 22030113111.

It is a happy number.

111311030220 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 (15).

It is a self number, because there is not a number n which added to its sum of digits gives 111311030220.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 310058401 + ... + 310058759.

It is an arithmetic number, because the mean of its divisors is an integer number (944622000).

Almost surely, 2^111311030220 is an apocalyptic number.

111311030220 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 111311030220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181367424000).

111311030220 is an abundant number, since it is smaller than the sum of its proper divisors (251423817780).

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

111311030220 is a wasteful number, since it uses less digits than its factorization.

111311030220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817 (or 815 counting only the distinct ones).

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

Adding to 111311030220 its reverse (22030113111), we get a palindrome (133341143331).

The spelling of 111311030220 in words is "one hundred eleven billion, three hundred eleven million, thirty thousand, two hundred twenty".