3244403402221 has 4 divisors (see below), whose sum is σ = 3257865657244. Its totient is φ = 3230941147200.

The previous prime is 3244403402197. The next prime is 3244403402239. The reversal of 3244403402221 is 1222043044423.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 940036898025 + 2304366504196 = 969555^2 + 1518014^2 .

It is a cyclic number.

It is not a de Polignac number, because 3244403402221 - 2²¹ = 3244401305069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3244403402921) 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 in 3 ways as a sum of consecutive naturals, for example, 6731127150 + ... + 6731127631.

It is an arithmetic number, because the mean of its divisors is an integer number (814466414311).

Almost surely, 2^{3244403402221} is an apocalyptic number.

It is an amenable number.

3244403402221 is a deficient number, since it is larger than the sum of its proper divisors (13462255023).

3244403402221 is a wasteful number, since it uses less digits than its factorization.

3244403402221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13462255022.

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 3244403402221 its reverse (1222043044423), we get a palindrome (4466446446644).

The spelling of 3244403402221 in words is "three trillion, two hundred forty-four billion, four hundred three million, four hundred two thousand, two hundred twenty-one".