2012110220209 has 2 divisors, whose sum is σ = 2012110220210. Its totient is φ = 2012110220208.

The previous prime is 2012110220177. The next prime is 2012110220227. The reversal of 2012110220209 is 9020220112102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1693368677025 + 318741543184 = 1301295^2 + 564572^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012110220209 - 2⁵ = 2012110220177 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2012110220209.

It is not a weakly prime, because it can be changed into another prime (2012110220299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006055110104 + 1006055110105.

It is an arithmetic number, because the mean of its divisors is an integer number (1006055110105).

Almost surely, 2^{2012110220209} is an apocalyptic number.

It is an amenable number.

2012110220209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012110220209 is an equidigital number, since it uses as much as digits as its factorization.

2012110220209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 2012110220209 in words is "two trillion, twelve billion, one hundred ten million, two hundred twenty thousand, two hundred nine".