22003221209 has 2 divisors, whose sum is σ = 22003221210. Its totient is φ = 22003221208.

The previous prime is 22003221179. The next prime is 22003221211. The reversal of 22003221209 is 90212230022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18539545600 + 3463675609 = 136160^2 + 58853^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22003221209 is a prime.

Together with 22003221211, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22003221269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11001610604 + 11001610605.

It is an arithmetic number, because the mean of its divisors is an integer number (11001610605).

Almost surely, 2^22003221209 is an apocalyptic number.

It is an amenable number.

22003221209 is a deficient number, since it is larger than the sum of its proper divisors (1).

22003221209 is an equidigital number, since it uses as much as digits as its factorization.

22003221209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The spelling of 22003221209 in words is "twenty-two billion, three million, two hundred twenty-one thousand, two hundred nine".