112011100020018 has 24 divisors (see below), whose sum is σ = 242776382445948. Its totient is φ = 37323853996032.

The previous prime is 112011100019999. The next prime is 112011100020019. The reversal of 112011100020018 is 810020001110211.

It can be written as a sum of positive squares in 2 ways, for example, as 110673198337689 + 1337901682329 = 10520133^2 + 1156677^2 .

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 (112011100020019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1098226255 + ... + 1098328242.

Almost surely, 2^{112011100020018} is an apocalyptic number.

112011100020018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

112011100020018 is an abundant number, since it is smaller than the sum of its proper divisors (130765282425930).

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

112011100020018 is a wasteful number, since it uses less digits than its factorization.

112011100020018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2196557338 (or 2196557335 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 112011100020018 its reverse (810020001110211), we get a palindrome (922031101130229).

The spelling of 112011100020018 in words is "one hundred twelve trillion, eleven billion, one hundred million, twenty thousand, eighteen".