111100117220 has 24 divisors (see below), whose sum is σ = 233454957624. Its totient is φ = 44412482816.

The previous prime is 111100117211. The next prime is 111100117223. The reversal of 111100117220 is 22711001111.

It can be written as a sum of positive squares in 4 ways, for example, as 812364004 + 110287753216 = 28502^2 + 332096^2 .

It is not an unprimeable number, because it can be changed into a prime (111100117223) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1689689 + ... + 1754208.

It is an arithmetic number, because the mean of its divisors is an integer number (9727289901).

Almost surely, 2^111100117220 is an apocalyptic number.

111100117220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111100117220 is an abundant number, since it is smaller than the sum of its proper divisors (122354840404).

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

111100117220 is a wasteful number, since it uses less digits than its factorization.

111100117220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3445519 (or 3445517 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 17.

Adding to 111100117220 its reverse (22711001111), we get a palindrome (133811118331).

The spelling of 111100117220 in words is "one hundred eleven billion, one hundred million, one hundred seventeen thousand, two hundred twenty".