423243242414221 has 2 divisors, whose sum is σ = 423243242414222. Its totient is φ = 423243242414220.

The previous prime is 423243242414189. The next prime is 423243242414249. The reversal of 423243242414221 is 122414242342324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 353432856036100 + 69810386378121 = 18799810^2 + 8355261^2 .

It is a cyclic number.

It is not a de Polignac number, because 423243242414221 - 2⁵ = 423243242414189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423243242414281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211621621207110 + 211621621207111.

It is an arithmetic number, because the mean of its divisors is an integer number (211621621207111).

Almost surely, 2^{423243242414221} is an apocalyptic number.

It is an amenable number.

423243242414221 is a deficient number, since it is larger than the sum of its proper divisors (1).

423243242414221 is an equidigital number, since it uses as much as digits as its factorization.

423243242414221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 589824, while the sum is 40.

Adding to 423243242414221 its reverse (122414242342324), we get a palindrome (545657484756545).

The spelling of 423243242414221 in words is "four hundred twenty-three trillion, two hundred forty-three billion, two hundred forty-two million, four hundred fourteen thousand, two hundred twenty-one".