3305204340221 has 16 divisors (see below), whose sum is σ = 3937370165376. Its totient is φ = 2715322585536.

The previous prime is 3305204340199. The next prime is 3305204340239. The reversal of 3305204340221 is 1220434025033.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 3305204340221 - 2³⁰ = 3304130598397 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 (3305204340521) 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 15 ways as a sum of consecutive naturals, for example, 95217026 + ... + 95251731.

It is an arithmetic number, because the mean of its divisors is an integer number (246085635336).

Almost surely, 2^{3305204340221} is an apocalyptic number.

It is an amenable number.

3305204340221 is a deficient number, since it is larger than the sum of its proper divisors (632165825155).

3305204340221 is a wasteful number, since it uses less digits than its factorization.

3305204340221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190468868.

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 3305204340221 its reverse (1220434025033), we get a palindrome (4525638365254).

The spelling of 3305204340221 in words is "three trillion, three hundred five billion, two hundred four million, three hundred forty thousand, two hundred twenty-one".