10323021209 has 2 divisors, whose sum is σ = 10323021210. Its totient is φ = 10323021208.

The previous prime is 10323021193. The next prime is 10323021227. The reversal of 10323021209 is 90212032301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9964032400 + 358988809 = 99820^2 + 18947^2 .

It is a cyclic number.

It is not a de Polignac number, because 10323021209 - 2⁴ = 10323021193 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 (10323021509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5161510604 + 5161510605.

It is an arithmetic number, because the mean of its divisors is an integer number (5161510605).

Almost surely, 2^10323021209 is an apocalyptic number.

It is an amenable number.

10323021209 is a deficient number, since it is larger than the sum of its proper divisors (1).

10323021209 is an equidigital number, since it uses as much as digits as its factorization.

10323021209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The spelling of 10323021209 in words is "ten billion, three hundred twenty-three million, twenty-one thousand, two hundred nine".