432420210221 has 2 divisors, whose sum is σ = 432420210222. Its totient is φ = 432420210220.

The previous prime is 432420210191. The next prime is 432420210259. The reversal of 432420210221 is 122012024234.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 382474218025 + 49945992196 = 618445^2 + 223486^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-432420210221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (432420210421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 216210105110 + 216210105111.

It is an arithmetic number, because the mean of its divisors is an integer number (216210105111).

Almost surely, 2^432420210221 is an apocalyptic number.

It is an amenable number.

432420210221 is a deficient number, since it is larger than the sum of its proper divisors (1).

432420210221 is an equidigital number, since it uses as much as digits as its factorization.

432420210221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 432420210221 its reverse (122012024234), we get a palindrome (554432234455).

The spelling of 432420210221 in words is "four hundred thirty-two billion, four hundred twenty million, two hundred ten thousand, two hundred twenty-one".