20330323221 has 16 divisors (see below), whose sum is σ = 29216042240. Its totient is φ = 12500775360.

The previous prime is 20330323163. The next prime is 20330323271. The reversal of 20330323221 is 12232303302.

It is not a de Polignac number, because 20330323221 - 2¹³ = 20330315029 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20330323271) 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 15 ways as a sum of consecutive naturals, for example, 163726 + ... + 259743.

It is an arithmetic number, because the mean of its divisors is an integer number (1826002640).

Almost surely, 2^20330323221 is an apocalyptic number.

It is an amenable number.

20330323221 is a deficient number, since it is larger than the sum of its proper divisors (8885719019).

20330323221 is a wasteful number, since it uses less digits than its factorization.

20330323221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424716.

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 20330323221 its reverse (12232303302), we get a palindrome (32562626523).

The spelling of 20330323221 in words is "twenty billion, three hundred thirty million, three hundred twenty-three thousand, two hundred twenty-one".