20202202212209 has 2 divisors, whose sum is σ = 20202202212210. Its totient is φ = 20202202212208.

The previous prime is 20202202212193. The next prime is 20202202212319. The reversal of 20202202212209 is 90221220220202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20185476480625 + 16725731584 = 4492825^2 + 129328^2 .

It is a cyclic number.

It is not a de Polignac number, because 20202202212209 - 2⁴ = 20202202212193 is a prime.

It is not a weakly prime, because it can be changed into another prime (20202202212109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10101101106104 + 10101101106105.

It is an arithmetic number, because the mean of its divisors is an integer number (10101101106105).

Almost surely, 2^{20202202212209} is an apocalyptic number.

It is an amenable number.

20202202212209 is a deficient number, since it is larger than the sum of its proper divisors (1).

20202202212209 is an equidigital number, since it uses as much as digits as its factorization.

20202202212209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 26.

The spelling of 20202202212209 in words is "twenty trillion, two hundred two billion, two hundred two million, two hundred twelve thousand, two hundred nine".