20302203321 has 6 divisors (see below), whose sum is σ = 29325404810. Its totient is φ = 13534802208.

The previous prime is 20302203307. The next prime is 20302203349. The reversal of 20302203321 is 12330220302.

It is a happy number.

20302203321 is a `hidden beast` number, since 20 + 302 + 20 + 3 + 321 = 666.

It can be written as a sum of positive squares in only one way, i.e., 15410739600 + 4891463721 = 124140^2 + 69939^2 .

It is not a de Polignac number, because 20302203321 - 2¹³ = 20302195129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20302203294 and 20302203303.

It is not an unprimeable number, because it can be changed into a prime (20302203371) 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 5 ways as a sum of consecutive naturals, for example, 1127900176 + ... + 1127900193.

Almost surely, 2^20302203321 is an apocalyptic number.

It is an amenable number.

20302203321 is a deficient number, since it is larger than the sum of its proper divisors (9023201489).

20302203321 is a wasteful number, since it uses less digits than its factorization.

20302203321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2255800375 (or 2255800372 counting only the distinct ones).

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

Adding to 20302203321 its reverse (12330220302), we get a palindrome (32632423623).

The spelling of 20302203321 in words is "twenty billion, three hundred two million, two hundred three thousand, three hundred twenty-one".