43344344324221 has 2 divisors, whose sum is σ = 43344344324222. Its totient is φ = 43344344324220.

The previous prime is 43344344324207. The next prime is 43344344324279. The reversal of 43344344324221 is 12242344344334.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43070527598596 + 273816725625 = 6562814^2 + 523275^2 .

It is a cyclic number.

It is not a de Polignac number, because 43344344324221 - 2⁷ = 43344344324093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43344344324201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21672172162110 + 21672172162111.

It is an arithmetic number, because the mean of its divisors is an integer number (21672172162111).

Almost surely, 2^{43344344324221} is an apocalyptic number.

It is an amenable number.

43344344324221 is a deficient number, since it is larger than the sum of its proper divisors (1).

43344344324221 is an equidigital number, since it uses as much as digits as its factorization.

43344344324221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2654208, while the sum is 43.

Adding to 43344344324221 its reverse (12242344344334), we get a palindrome (55586688668555).

The spelling of 43344344324221 in words is "forty-three trillion, three hundred forty-four billion, three hundred forty-four million, three hundred twenty-four thousand, two hundred twenty-one".