20012222000209 has 2 divisors, whose sum is σ = 20012222000210. Its totient is φ = 20012222000208.

The previous prime is 20012222000171. The next prime is 20012222000237. The reversal of 20012222000209 is 90200022221002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14114260041025 + 5897961959184 = 3756895^2 + 2428572^2 .

It is a cyclic number.

It is not a de Polignac number, because 20012222000209 - 2³⁷ = 19874783046737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20012222000209.

It is not a weakly prime, because it can be changed into another prime (20012222000249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006111000104 + 10006111000105.

It is an arithmetic number, because the mean of its divisors is an integer number (10006111000105).

Almost surely, 2^{20012222000209} is an apocalyptic number.

It is an amenable number.

20012222000209 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012222000209 is an equidigital number, since it uses as much as digits as its factorization.

20012222000209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

The spelling of 20012222000209 in words is "twenty trillion, twelve billion, two hundred twenty-two million, two hundred nine", and thus it is an aban number.