111110221120220 has 144 divisors (see below), whose sum is σ = 288375246048960. Its totient is φ = 35182126307328.

The previous prime is 111110221120201. The next prime is 111110221120253. The reversal of 111110221120220 is 22021122011111.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 23719037 + ... + 28014516.

It is an arithmetic number, because the mean of its divisors is an integer number (2002605875340).

Almost surely, 2^{111110221120220} is an apocalyptic number.

111110221120220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111110221120220 is an abundant number, since it is smaller than the sum of its proper divisors (177265024928740).

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

111110221120220 is a wasteful number, since it uses less digits than its factorization.

111110221120220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51733644 (or 51733619 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 111110221120220 its reverse (22021122011111), we get a palindrome (133131343131331).

The spelling of 111110221120220 in words is "one hundred eleven trillion, one hundred ten billion, two hundred twenty-one million, one hundred twenty thousand, two hundred twenty".