20023203321 has 20 divisors (see below), whose sum is σ = 32630406864. Its totient is φ = 12135274200.

The previous prime is 20023203281. The next prime is 20023203377. The reversal of 20023203321 is 12330232002.

It is a happy number.

20023203321 is a `hidden beast` number, since 20 + 0 + 2 + 320 + 3 + 321 = 666.

It is not a de Polignac number, because 20023203321 - 2²¹ = 20021106169 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20023203294 and 20023203303.

It is not an unprimeable number, because it can be changed into a prime (20023202321) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11235475 + ... + 11237256.

Almost surely, 2^20023203321 is an apocalyptic number.

It is an amenable number.

20023203321 is a deficient number, since it is larger than the sum of its proper divisors (12607203543).

20023203321 is a wasteful number, since it uses less digits than its factorization.

20023203321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22472754 (or 22472745 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 20023203321 its reverse (12330232002), we get a palindrome (32353435323).

The spelling of 20023203321 in words is "twenty billion, twenty-three million, two hundred three thousand, three hundred twenty-one".