443344042020221 has 2 divisors, whose sum is σ = 443344042020222. Its totient is φ = 443344042020220.

The previous prime is 443344042020181. The next prime is 443344042020233. The reversal of 443344042020221 is 122020240443344.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 443317825552996 + 26216467225 = 21055114^2 + 161915^2 .

It is a cyclic number.

It is not a de Polignac number, because 443344042020221 - 2³⁴ = 443326862151037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (443344042020281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221672021010110 + 221672021010111.

It is an arithmetic number, because the mean of its divisors is an integer number (221672021010111).

Almost surely, 2^{443344042020221} is an apocalyptic number.

It is an amenable number.

443344042020221 is a deficient number, since it is larger than the sum of its proper divisors (1).

443344042020221 is an equidigital number, since it uses as much as digits as its factorization.

443344042020221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 147456, while the sum is 35.

Adding to 443344042020221 its reverse (122020240443344), we get a palindrome (565364282463565).

The spelling of 443344042020221 in words is "four hundred forty-three trillion, three hundred forty-four billion, forty-two million, twenty thousand, two hundred twenty-one".