10223209 has 2 divisors, whose sum is σ = 10223210. Its totient is φ = 10223208.

The previous prime is 10223183. The next prime is 10223221. The reversal of 10223209 is 90232201.

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., 9859600 + 363609 = 3140^2 + 603^2 .

It is an emirp because it is prime and its reverse (90232201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10223209 - 2⁵ = 10223177 is a prime.

It is not a weakly prime, because it can be changed into another prime (10223249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5111604 + 5111605.

It is an arithmetic number, because the mean of its divisors is an integer number (5111605).

Almost surely, 2^10223209 is an apocalyptic number.

It is an amenable number.

10223209 is a deficient number, since it is larger than the sum of its proper divisors (1).

10223209 is an equidigital number, since it uses as much as digits as its factorization.

10223209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 10223209 is about 3197.3753298604. The cubic root of 10223209 is about 217.0346522419.

The spelling of 10223209 in words is "ten million, two hundred twenty-three thousand, two hundred nine".