112111110018 has 20 divisors (see below), whose sum is σ = 251211932070. Its totient is φ = 37370369952.

The previous prime is 112111110017. The next prime is 112111110019. The reversal of 112111110018 is 810011111211.

It is an interprime number because it is at equal distance from previous prime (112111110017) and next prime (112111110019).

It can be written as a sum of positive squares in only one way, i.e., 111591406809 + 519703209 = 334053^2 + 22797^2 .

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 (112111110011) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 346021783 + ... + 346022106.

Almost surely, 2^112111110018 is an apocalyptic number.

112111110018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

112111110018 is an abundant number, since it is smaller than the sum of its proper divisors (139100822052).

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

112111110018 is an equidigital number, since it uses as much as digits as its factorization.

112111110018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692043903 (or 692043894 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 18.

Adding to 112111110018 its reverse (810011111211), we get a palindrome (922122221229).

The spelling of 112111110018 in words is "one hundred twelve billion, one hundred eleven million, one hundred ten thousand, eighteen".