22001000209 has 2 divisors, whose sum is σ = 22001000210. Its totient is φ = 22001000208.

The previous prime is 22001000171. The next prime is 22001000227. The reversal of 22001000209 is 90200010022.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21992000209 + 9000000 = 148297^2 + 3000^2 .

It is a cyclic number.

It is not a de Polignac number, because 22001000209 - 2⁷ = 22001000081 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22001000192 and 22001000201.

It is not a weakly prime, because it can be changed into another prime (22001000269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11000500104 + 11000500105.

It is an arithmetic number, because the mean of its divisors is an integer number (11000500105).

Almost surely, 2^22001000209 is an apocalyptic number.

It is an amenable number.

22001000209 is a deficient number, since it is larger than the sum of its proper divisors (1).

22001000209 is an equidigital number, since it uses as much as digits as its factorization.

22001000209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

The spelling of 22001000209 in words is "twenty-two billion, one million, two hundred nine", and thus it is an aban number.