20002330321 has 4 divisors (see below), whose sum is σ = 20003433892. Its totient is φ = 20001226752.

The previous prime is 20002330279. The next prime is 20002330333. The reversal of 20002330321 is 12303320002.

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 8884947600 + 11117382721 = 94260^2 + 105439^2 .

It is a cyclic number.

It is not a de Polignac number, because 20002330321 - 2⁷ = 20002330193 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20002330295 and 20002330304.

It is not an unprimeable number, because it can be changed into a prime (20002337321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 524136 + ... + 561001.

It is an arithmetic number, because the mean of its divisors is an integer number (5000858473).

Almost surely, 2^20002330321 is an apocalyptic number.

It is an amenable number.

20002330321 is a deficient number, since it is larger than the sum of its proper divisors (1103571).

20002330321 is a wasteful number, since it uses less digits than its factorization.

20002330321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103570.

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 20002330321 its reverse (12303320002), we get a palindrome (32305650323).

The spelling of 20002330321 in words is "twenty billion, two million, three hundred thirty thousand, three hundred twenty-one".