20020330321 has 2 divisors, whose sum is σ = 20020330322. Its totient is φ = 20020330320.

The previous prime is 20020330301. The next prime is 20020330417. The reversal of 20020330321 is 12303302002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19723112721 + 297217600 = 140439^2 + 17240^2 .

It is a cyclic number.

It is not a de Polignac number, because 20020330321 - 2¹⁵ = 20020297553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20020330295 and 20020330304.

It is not a weakly prime, because it can be changed into another prime (20020330301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010165160 + 10010165161.

It is an arithmetic number, because the mean of its divisors is an integer number (10010165161).

Almost surely, 2^20020330321 is an apocalyptic number.

It is an amenable number.

20020330321 is a deficient number, since it is larger than the sum of its proper divisors (1).

20020330321 is an equidigital number, since it uses as much as digits as its factorization.

20020330321 is an evil number, because the sum of its binary digits is even.

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

Adding to 20020330321 its reverse (12303302002), we get a palindrome (32323632323).

The spelling of 20020330321 in words is "twenty billion, twenty million, three hundred thirty thousand, three hundred twenty-one".