3243420221 has 8 divisors (see below), whose sum is σ = 3250665120. Its totient is φ = 3236185008.

The previous prime is 3243420199. The next prime is 3243420253. The reversal of 3243420221 is 1220243423.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3243420221 - 2²⁶ = 3176311357 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 (3243420121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1380770 + ... + 1383116.

It is an arithmetic number, because the mean of its divisors is an integer number (406333140).

Almost surely, 2^3243420221 is an apocalyptic number.

It is an amenable number.

3243420221 is a deficient number, since it is larger than the sum of its proper divisors (7244899).

3243420221 is a wasteful number, since it uses less digits than its factorization.

3243420221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4843.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 3243420221 is about 56951.0335375926. The cubic root of 3243420221 is about 1480.2477399074.

Adding to 3243420221 its reverse (1220243423), we get a palindrome (4463663644).

The spelling of 3243420221 in words is "three billion, two hundred forty-three million, four hundred twenty thousand, two hundred twenty-one".