112111112220 has 96 divisors (see below), whose sum is σ = 323536217088. Its totient is φ = 28985340672.

The previous prime is 112111112173. The next prime is 112111112299. The reversal of 112111112220 is 22211111211.

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 112111112220.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 539037 + ... + 717483.

It is an arithmetic number, because the mean of its divisors is an integer number (3370168928).

Almost surely, 2^112111112220 is an apocalyptic number.

112111112220 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 112111112220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161768108544).

112111112220 is an abundant number, since it is smaller than the sum of its proper divisors (211425104868).

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

112111112220 is a wasteful number, since it uses less digits than its factorization.

112111112220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178779 (or 178777 counting only the distinct ones).

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

Adding to 112111112220 its reverse (22211111211), we get a palindrome (134322223431).

The spelling of 112111112220 in words is "one hundred twelve billion, one hundred eleven million, one hundred twelve thousand, two hundred twenty".