2112110111999 has 4 divisors (see below), whose sum is σ = 2126285347800. Its totient is φ = 2097934876200.

The previous prime is 2112110111971. The next prime is 2112110112043. The reversal of 2112110111999 is 9991110112112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2112110111999 is a prime.

It is a super-2 number, since 2×2112110111999² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112110111599) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7087617677 + ... + 7087617974.

It is an arithmetic number, because the mean of its divisors is an integer number (531571336950).

Almost surely, 2^{2112110111999} is an apocalyptic number.

2112110111999 is a deficient number, since it is larger than the sum of its proper divisors (14175235801).

2112110111999 is a wasteful number, since it uses less digits than its factorization.

2112110111999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14175235800.

The product of its (nonzero) digits is 2916, while the sum is 38.

The spelling of 2112110111999 in words is "two trillion, one hundred twelve billion, one hundred ten million, one hundred eleven thousand, nine hundred ninety-nine".