3243104240221 has 2 divisors, whose sum is σ = 3243104240222. Its totient is φ = 3243104240220.

The previous prime is 3243104240197. The next prime is 3243104240231. The reversal of 3243104240221 is 1220424013423.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3238610548996 + 4493691225 = 1799614^2 + 67035^2 .

It is a cyclic number.

It is not a de Polignac number, because 3243104240221 - 2¹¹ = 3243104238173 is a prime.

It is a super-2 number, since 2×3243104240221² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3243104240221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3243104240231) 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, 1621552120110 + 1621552120111.

It is an arithmetic number, because the mean of its divisors is an integer number (1621552120111).

Almost surely, 2^{3243104240221} is an apocalyptic number.

It is an amenable number.

3243104240221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3243104240221 is an equidigital number, since it uses as much as digits as its factorization.

3243104240221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 3243104240221 its reverse (1220424013423), we get a palindrome (4463528253644).

The spelling of 3243104240221 in words is "three trillion, two hundred forty-three billion, one hundred four million, two hundred forty thousand, two hundred twenty-one".