424334022221 has 2 divisors, whose sum is σ = 424334022222. Its totient is φ = 424334022220.

The previous prime is 424334022187. The next prime is 424334022239. The reversal of 424334022221 is 122220433424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 335895589225 + 88438432996 = 579565^2 + 297386^2 .

It is a cyclic number.

It is not a de Polignac number, because 424334022221 - 2⁶ = 424334022157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (424334622221) 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, 212167011110 + 212167011111.

It is an arithmetic number, because the mean of its divisors is an integer number (212167011111).

Almost surely, 2^424334022221 is an apocalyptic number.

It is an amenable number.

424334022221 is a deficient number, since it is larger than the sum of its proper divisors (1).

424334022221 is an equidigital number, since it uses as much as digits as its factorization.

424334022221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 424334022221 its reverse (122220433424), we get a palindrome (546554455645).

The spelling of 424334022221 in words is "four hundred twenty-four billion, three hundred thirty-four million, twenty-two thousand, two hundred twenty-one".