20330230221 has 24 divisors (see below), whose sum is σ = 33564782784. Its totient is φ = 11615970240.

The previous prime is 20330230171. The next prime is 20330230237. The reversal of 20330230221 is 12203203302.

It is a happy number.

It is not a de Polignac number, because 20330230221 - 2¹⁴ = 20330213837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20330230194 and 20330230203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20330230321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 984361 + ... + 1004801.

It is an arithmetic number, because the mean of its divisors is an integer number (1398532616).

Almost surely, 2^20330230221 is an apocalyptic number.

20330230221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20330230221 is a deficient number, since it is larger than the sum of its proper divisors (13234552563).

20330230221 is a wasteful number, since it uses less digits than its factorization.

20330230221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36241 (or 36238 counting only the distinct ones).

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

Adding to 20330230221 its reverse (12203203302), we get a palindrome (32533433523).

The spelling of 20330230221 in words is "twenty billion, three hundred thirty million, two hundred thirty thousand, two hundred twenty-one".