111120120110220 has 96 divisors (see below), whose sum is σ = 335108465883072. Its totient is φ = 27349496767488.

The previous prime is 111120120110203. The next prime is 111120120110221. The reversal of 111120120110220 is 22011021021111.

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 111120120110220.

It is not an unprimeable number, because it can be changed into a prime (111120120110221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1413507 + ... + 14974586.

It is an arithmetic number, because the mean of its divisors is an integer number (3490713186282).

Almost surely, 2^{111120120110220} is an apocalyptic number.

111120120110220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111120120110220 is an abundant number, since it is smaller than the sum of its proper divisors (223988345772852).

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

111120120110220 is a wasteful number, since it uses less digits than its factorization.

111120120110220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16396811 (or 16396809 counting only the distinct ones).

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

Adding to 111120120110220 its reverse (22011021021111), we get a palindrome (133131141131331).

The spelling of 111120120110220 in words is "one hundred eleven trillion, one hundred twenty billion, one hundred twenty million, one hundred ten thousand, two hundred twenty".