2111110999 has 12 divisors (see below), whose sum is σ = 2227718376. Its totient is φ = 1999813088.

The previous prime is 2111110987. The next prime is 2111111003. The reversal of 2111110999 is 9990111112.

It is not a de Polignac number, because 2111110999 - 2²¹ = 2109013847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111110979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20892 + ... + 68254.

It is an arithmetic number, because the mean of its divisors is an integer number (185643198).

Almost surely, 2^2111110999 is an apocalyptic number.

2111110999 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

2111110999 is a deficient number, since it is larger than the sum of its proper divisors (116607377).

2111110999 is an equidigital number, since it uses as much as digits as its factorization.

2111110999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47474 (or 47445 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 34.

The square root of 2111110999 is about 45946.8279536248. The cubic root of 2111110999 is about 1282.8336877172.

The spelling of 2111110999 in words is "two billion, one hundred eleven million, one hundred ten thousand, nine hundred ninety-nine".