22050209 has 2 divisors, whose sum is σ = 22050210. Its totient is φ = 22050208.

The previous prime is 22050167. The next prime is 22050221. The reversal of 22050209 is 90205022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18515809 + 3534400 = 4303^2 + 1880^2 .

It is a cyclic number.

It is not a de Polignac number, because 22050209 - 2⁸ = 22049953 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22050229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11025104 + 11025105.

It is an arithmetic number, because the mean of its divisors is an integer number (11025105).

Almost surely, 2^22050209 is an apocalyptic number.

It is an amenable number.

22050209 is a deficient number, since it is larger than the sum of its proper divisors (1).

22050209 is an equidigital number, since it uses as much as digits as its factorization.

22050209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 22050209 is about 4695.7650068972. The cubic root of 22050209 is about 280.4169341280.

The spelling of 22050209 in words is "twenty-two million, fifty thousand, two hundred nine".