22002120209 has 2 divisors, whose sum is σ = 22002120210. Its totient is φ = 22002120208.

The previous prime is 22002120193. The next prime is 22002120223. The reversal of 22002120209 is 90202120022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21059814400 + 942305809 = 145120^2 + 30697^2 .

It is a cyclic number.

It is not a de Polignac number, because 22002120209 - 2⁴ = 22002120193 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (22002120269) 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, 11001060104 + 11001060105.

It is an arithmetic number, because the mean of its divisors is an integer number (11001060105).

Almost surely, 2^22002120209 is an apocalyptic number.

It is an amenable number.

22002120209 is a deficient number, since it is larger than the sum of its proper divisors (1).

22002120209 is an equidigital number, since it uses as much as digits as its factorization.

22002120209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The spelling of 22002120209 in words is "twenty-two billion, two million, one hundred twenty thousand, two hundred nine".