20330354321 has 4 divisors (see below), whose sum is σ = 20332054512. Its totient is φ = 20328654132.

The previous prime is 20330354279. The next prime is 20330354333. The reversal of 20330354321 is 12345303302.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20330354321 - 2¹⁸ = 20330092177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20330354351) 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, 832031 + ... + 856116.

It is an arithmetic number, because the mean of its divisors is an integer number (5083013628).

Almost surely, 2^20330354321 is an apocalyptic number.

It is an amenable number.

20330354321 is a deficient number, since it is larger than the sum of its proper divisors (1700191).

20330354321 is a wasteful number, since it uses less digits than its factorization.

20330354321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1700190.

The product of its (nonzero) digits is 6480, while the sum is 26.

Adding to 20330354321 its reverse (12345303302), we get a palindrome (32675657623).

The spelling of 20330354321 in words is "twenty billion, three hundred thirty million, three hundred fifty-four thousand, three hundred twenty-one".