2112110018 has 6 divisors (see below), whose sum is σ = 3168262521. Its totient is φ = 1056022512.

The previous prime is 2112110009. The next prime is 2112110027. The reversal of 2112110018 is 8100112112.

It is an interprime number because it is at equal distance from previous prime (2112110009) and next prime (2112110027).

It can be written as a sum of positive squares in 2 ways, for example, as 1864771489 + 247338529 = 43183^2 + 15727^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=32497.

It is a super-2 number, since 2×2112110018² = 8922017456271920648, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2112109978 and 2112110005.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 48746 + ... + 81242.

Almost surely, 2^2112110018 is an apocalyptic number.

2112110018 is a deficient number, since it is larger than the sum of its proper divisors (1056152503).

2112110018 is an frugal number, since it uses more digits than its factorization.

2112110018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64996 (or 32499 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

The square root of 2112110018 is about 45957.6981364385. The cubic root of 2112110018 is about 1283.0360098004.

Multiplying 2112110018 by its product of nonzero digits (32), we get a square (67587520576 = 259976²).

The spelling of 2112110018 in words is "two billion, one hundred twelve million, one hundred ten thousand, eighteen".