111112111100220 has 48 divisors (see below), whose sum is σ = 327488327456640. Its totient is φ = 28070428067136.

The previous prime is 111112111100203. The next prime is 111112111100227. The reversal of 111112111100220 is 22001111211111.

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 111112111100220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111112111100227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48733380922 + ... + 48733383201.

It is an arithmetic number, because the mean of its divisors is an integer number (6822673488680).

Almost surely, 2^{111112111100220} is an apocalyptic number.

111112111100220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111112111100220 is an abundant number, since it is smaller than the sum of its proper divisors (216376216356420).

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

111112111100220 is a wasteful number, since it uses less digits than its factorization.

111112111100220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97466764154 (or 97466764152 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 111112111100220 its reverse (22001111211111), we get a palindrome (133113222311331).

The spelling of 111112111100220 in words is "one hundred eleven trillion, one hundred twelve billion, one hundred eleven million, one hundred thousand, two hundred twenty".