111112220 has 12 divisors (see below), whose sum is σ = 233335704. Its totient is φ = 44444880.

The previous prime is 111112219. The next prime is 111112237. The reversal of 111112220 is 22211111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2777786 + ... + 2777825.

It is an arithmetic number, because the mean of its divisors is an integer number (19444642).

Almost surely, 2^111112220 is an apocalyptic number.

111112220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111112220 is an abundant number, since it is smaller than the sum of its proper divisors (122223484).

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

111112220 is a wasteful number, since it uses less digits than its factorization.

111112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5555620 (or 5555618 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 111112220 is about 10540.9781329818. The cubic root of 111112220 is about 480.7514560583.

Adding to 111112220 its reverse (22211111), we get a palindrome (133323331).

It can be divided in two parts, 11111 and 2220, that added together give a palindrome (13331).

The spelling of 111112220 in words is "one hundred eleven million, one hundred twelve thousand, two hundred twenty".