1022259209 has 2 divisors, whose sum is σ = 1022259210. Its totient is φ = 1022259208.

The previous prime is 1022259197. The next prime is 1022259211. The reversal of 1022259209 is 9029522201.

1022259209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 698439184 + 323820025 = 26428^2 + 17995^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022259209 - 2⁸ = 1022258953 is a prime.

It is a Sophie Germain prime.

Together with 1022259211, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1022259229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511129604 + 511129605.

It is an arithmetic number, because the mean of its divisors is an integer number (511129605).

Almost surely, 2^1022259209 is an apocalyptic number.

It is an amenable number.

1022259209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022259209 is an equidigital number, since it uses as much as digits as its factorization.

1022259209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 1022259209 is about 31972.7885709082. The cubic root of 1022259209 is about 1007.3653546972.

The spelling of 1022259209 in words is "one billion, twenty-two million, two hundred fifty-nine thousand, two hundred nine".