20323030221 has 64 divisors (see below), whose sum is σ = 32955498240. Its totient is φ = 12303187200.

The previous prime is 20323030193. The next prime is 20323030223. The reversal of 20323030221 is 12203032302.

It is a happy number.

20323030221 is a `hidden beast` number, since 20 + 323 + 0 + 302 + 21 = 666.

It is not a de Polignac number, because 20323030221 - 2⁹ = 20323029709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20323030194 and 20323030203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20323030223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5776755 + ... + 5780271.

It is an arithmetic number, because the mean of its divisors is an integer number (514929660).

Almost surely, 2^20323030221 is an apocalyptic number.

It is an amenable number.

20323030221 is a deficient number, since it is larger than the sum of its proper divisors (12632468019).

20323030221 is a wasteful number, since it uses less digits than its factorization.

20323030221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3803 (or 3797 counting only the distinct ones).

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

Adding to 20323030221 its reverse (12203032302), we get a palindrome (32526062523).

The spelling of 20323030221 in words is "twenty billion, three hundred twenty-three million, thirty thousand, two hundred twenty-one".