20122202209 has 2 divisors, whose sum is σ = 20122202210. Its totient is φ = 20122202208.

The previous prime is 20122202173. The next prime is 20122202227. The reversal of 20122202209 is 90220222102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10366294225 + 9755907984 = 101815^2 + 98772^2 .

It is a cyclic number.

It is not a de Polignac number, because 20122202209 - 2⁷ = 20122202081 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20122202209.

It is not a weakly prime, because it can be changed into another prime (20122200209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10061101104 + 10061101105.

It is an arithmetic number, because the mean of its divisors is an integer number (10061101105).

Almost surely, 2^20122202209 is an apocalyptic number.

It is an amenable number.

20122202209 is a deficient number, since it is larger than the sum of its proper divisors (1).

20122202209 is an equidigital number, since it uses as much as digits as its factorization.

20122202209 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 20122202209 in words is "twenty billion, one hundred twenty-two million, two hundred two thousand, two hundred nine".