2112300209 has 4 divisors (see below), whose sum is σ = 2131679220. Its totient is φ = 2092921200.

The previous prime is 2112300191. The next prime is 2112300217. The reversal of 2112300209 is 9020032112.

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 868186225 + 1244113984 = 29465^2 + 35272^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112300209 - 2¹⁶ = 2112234673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2112300409) 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, 9689342 + ... + 9689559.

It is an arithmetic number, because the mean of its divisors is an integer number (532919805).

Almost surely, 2^2112300209 is an apocalyptic number.

It is an amenable number.

2112300209 is a deficient number, since it is larger than the sum of its proper divisors (19379011).

2112300209 is a wasteful number, since it uses less digits than its factorization.

2112300209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19379010.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 2112300209 is about 45959.7672861819. The cubic root of 2112300209 is about 1283.0745201961.

The spelling of 2112300209 in words is "two billion, one hundred twelve million, three hundred thousand, two hundred nine".