1112220018 has 64 divisors (see below), whose sum is σ = 3041982720. Its totient is φ = 293331456.

The previous prime is 1112220017. The next prime is 1112220029. The reversal of 1112220018 is 8100222111.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1112220017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 108255 + ... + 118082.

It is an arithmetic number, because the mean of its divisors is an integer number (47530980).

Almost surely, 2^1112220018 is an apocalyptic number.

1112220018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1112220018 is an abundant number, since it is smaller than the sum of its proper divisors (1929762702).

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

1112220018 is a wasteful number, since it uses less digits than its factorization.

1112220018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226368 (or 226362 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

The square root of 1112220018 is about 33349.9627885849. The cubic root of 1112220018 is about 1036.0886172414.

Adding to 1112220018 its reverse (8100222111), we get a palindrome (9212442129).

The spelling of 1112220018 in words is "one billion, one hundred twelve million, two hundred twenty thousand, eighteen".