423122300221 has 2 divisors, whose sum is σ = 423122300222. Its totient is φ = 423122300220.

The previous prime is 423122300203. The next prime is 423122300243. The reversal of 423122300221 is 122003221324.

It is an a-pointer prime, because the next prime (423122300243) can be obtained adding 423122300221 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 407312004100 + 15810296121 = 638210^2 + 125739^2 .

It is a cyclic number.

It is not a de Polignac number, because 423122300221 - 2⁹ = 423122299709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 423122300192 and 423122300201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423122300021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211561150110 + 211561150111.

It is an arithmetic number, because the mean of its divisors is an integer number (211561150111).

Almost surely, 2^423122300221 is an apocalyptic number.

It is an amenable number.

423122300221 is a deficient number, since it is larger than the sum of its proper divisors (1).

423122300221 is an equidigital number, since it uses as much as digits as its factorization.

423122300221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 423122300221 its reverse (122003221324), we get a palindrome (545125521545).

The spelling of 423122300221 in words is "four hundred twenty-three billion, one hundred twenty-two million, three hundred thousand, two hundred twenty-one".