3220201321 has 4 divisors (see below), whose sum is σ = 3220488772. Its totient is φ = 3219913872.

The previous prime is 3220201289. The next prime is 3220201337. The reversal of 3220201321 is 1231020223.

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 1683953296 + 1536248025 = 41036^2 + 39195^2 .

It is a cyclic number.

It is not a de Polignac number, because 3220201321 - 2⁵ = 3220201289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3220201295 and 3220201304.

It is not an unprimeable number, because it can be changed into a prime (3220201351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126210 + ... + 149563.

It is an arithmetic number, because the mean of its divisors is an integer number (805122193).

Almost surely, 2^3220201321 is an apocalyptic number.

It is an amenable number.

3220201321 is a deficient number, since it is larger than the sum of its proper divisors (287451).

3220201321 is a wasteful number, since it uses less digits than its factorization.

3220201321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287450.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 3220201321 is about 56746.8177169434. The cubic root of 3220201321 is about 1476.7070262335.

Adding to 3220201321 its reverse (1231020223), we get a palindrome (4451221544).

The spelling of 3220201321 in words is "three billion, two hundred twenty million, two hundred one thousand, three hundred twenty-one".