203221223 has 2 divisors, whose sum is σ = 203221224. Its totient is φ = 203221222.

The previous prime is 203221211. The next prime is 203221229. The reversal of 203221223 is 322122302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 203221223 - 2⁶ = 203221159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203221229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101610611 + 101610612.

It is an arithmetic number, because the mean of its divisors is an integer number (101610612).

Almost surely, 2^203221223 is an apocalyptic number.

203221223 is a deficient number, since it is larger than the sum of its proper divisors (1).

203221223 is an equidigital number, since it uses as much as digits as its factorization.

203221223 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 17.

The square root of 203221223 is about 14255.5681402040. The cubic root of 203221223 is about 587.9264788064.

Adding to 203221223 its reverse (322122302), we get a palindrome (525343525).

The spelling of 203221223 in words is "two hundred three million, two hundred twenty-one thousand, two hundred twenty-three".