8201023321 has 4 divisors (see below), whose sum is σ = 8201217700. Its totient is φ = 8200828944.

The previous prime is 8201023289. The next prime is 8201023343. The reversal of 8201023321 is 1233201028.

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 6310078096 + 1890945225 = 79436^2 + 43485^2 .

It is a cyclic number.

It is not a de Polignac number, because 8201023321 - 2⁵ = 8201023289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8201023292 and 8201023301.

It is not an unprimeable number, because it can be changed into a prime (8201023381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4326 + ... + 128143.

It is an arithmetic number, because the mean of its divisors is an integer number (2050304425).

Almost surely, 2^8201023321 is an apocalyptic number.

It is an amenable number.

8201023321 is a deficient number, since it is larger than the sum of its proper divisors (194379).

8201023321 is a wasteful number, since it uses less digits than its factorization.

8201023321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194378.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 8201023321 is about 90559.5015500858. The cubic root of 8201023321 is about 2016.6135561664.

Adding to 8201023321 its reverse (1233201028), we get a palindrome (9434224349).

The spelling of 8201023321 in words is "eight billion, two hundred one million, twenty-three thousand, three hundred twenty-one".