111222112110 has 64 divisors (see below), whose sum is σ = 274305614400. Its totient is φ = 28840983552.

The previous prime is 111222112063. The next prime is 111222112153. The reversal of 111222112110 is 11211222111.

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 111222112110.

It is a congruent number.

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, 1957786 + ... + 2013794.

It is an arithmetic number, because the mean of its divisors is an integer number (4286025225).

Almost surely, 2^111222112110 is an apocalyptic number.

111222112110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 111222112110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137152807200).

111222112110 is an abundant number, since it is smaller than the sum of its proper divisors (163083502290).

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

111222112110 is a wasteful number, since it uses less digits than its factorization.

111222112110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57845.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111222112110 its reverse (11211222111), we get a palindrome (122433334221).

The spelling of 111222112110 in words is "one hundred eleven billion, two hundred twenty-two million, one hundred twelve thousand, one hundred ten".