3421260344221 has 2 divisors, whose sum is σ = 3421260344222. Its totient is φ = 3421260344220.

The previous prime is 3421260344197. The next prime is 3421260344311. The reversal of 3421260344221 is 1224430621243.

3421260344221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3191760902500 + 229499441721 = 1786550^2 + 479061^2 .

It is a cyclic number.

It is not a de Polignac number, because 3421260344221 - 2⁵ = 3421260344189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3421260354221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1710630172110 + 1710630172111.

It is an arithmetic number, because the mean of its divisors is an integer number (1710630172111).

Almost surely, 2^{3421260344221} is an apocalyptic number.

It is an amenable number.

3421260344221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3421260344221 is an equidigital number, since it uses as much as digits as its factorization.

3421260344221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 34.

Adding to 3421260344221 its reverse (1224430621243), we get a palindrome (4645690965464).

The spelling of 3421260344221 in words is "three trillion, four hundred twenty-one billion, two hundred sixty million, three hundred forty-four thousand, two hundred twenty-one".