2111110009 has 4 divisors (see below), whose sum is σ = 2120329060. Its totient is φ = 2101890960.

The previous prime is 2111109961. The next prime is 2111110019. The reversal of 2111110009 is 9000111112.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1407375225 + 703734784 = 37515^2 + 26528^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2111110009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2111109974 and 2111110001.

It is not an unprimeable number, because it can be changed into a prime (2111110019) 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, 4609182 + ... + 4609639.

It is an arithmetic number, because the mean of its divisors is an integer number (530082265).

Almost surely, 2^2111110009 is an apocalyptic number.

It is an amenable number.

2111110009 is a deficient number, since it is larger than the sum of its proper divisors (9219051).

2111110009 is an equidigital number, since it uses as much as digits as its factorization.

2111110009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9219050.

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

The square root of 2111110009 is about 45946.8171803010. The cubic root of 2111110009 is about 1282.8334871900.

The spelling of 2111110009 in words is "two billion, one hundred eleven million, one hundred ten thousand, nine".