2111085209 has 8 divisors (see below), whose sum is σ = 2181449280. Its totient is φ = 2041421616.

The previous prime is 2111085191. The next prime is 2111085239. The reversal of 2111085209 is 9025801112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2111085209 - 2⁸ = 2111084953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2111085239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168989 + ... + 181050.

It is an arithmetic number, because the mean of its divisors is an integer number (272681160).

Almost surely, 2^2111085209 is an apocalyptic number.

It is an amenable number.

2111085209 is a deficient number, since it is larger than the sum of its proper divisors (70364071).

2111085209 is a wasteful number, since it uses less digits than its factorization.

2111085209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350239.

The product of its (nonzero) digits is 1440, while the sum is 29.

The square root of 2111085209 is about 45946.5473022729. The cubic root of 2111085209 is about 1282.8284638618.

The spelling of 2111085209 in words is "two billion, one hundred eleven million, eighty-five thousand, two hundred nine".