421032223 has 2 divisors, whose sum is σ = 421032224. Its totient is φ = 421032222.

The previous prime is 421032203. The next prime is 421032253. The reversal of 421032223 is 322230124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 421032223 - 2⁹ = 421031711 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 421032223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421032203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210516111 + 210516112.

It is an arithmetic number, because the mean of its divisors is an integer number (210516112).

Almost surely, 2^421032223 is an apocalyptic number.

421032223 is a deficient number, since it is larger than the sum of its proper divisors (1).

421032223 is an equidigital number, since it uses as much as digits as its factorization.

421032223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 421032223 is about 20519.0697401222. The cubic root of 421032223 is about 749.5002436580.

Adding to 421032223 its reverse (322230124), we get a palindrome (743262347).

The spelling of 421032223 in words is "four hundred twenty-one million, thirty-two thousand, two hundred twenty-three".