20003230221 has 64 divisors (see below), whose sum is σ = 30473748480. Its totient is φ = 11653536960.

The previous prime is 20003230207. The next prime is 20003230241. The reversal of 20003230221 is 12203230002.

It is not a de Polignac number, because 20003230221 - 2⁵ = 20003230189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20003230221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20003230201) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9602046 + ... + 9604128.

It is an arithmetic number, because the mean of its divisors is an integer number (476152320).

Almost surely, 2^20003230221 is an apocalyptic number.

It is an amenable number.

20003230221 is a deficient number, since it is larger than the sum of its proper divisors (10470518259).

20003230221 is a wasteful number, since it uses less digits than its factorization.

20003230221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2203 (or 2177 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 20003230221 its reverse (12203230002), we get a palindrome (32206460223).

The spelling of 20003230221 in words is "twenty billion, three million, two hundred thirty thousand, two hundred twenty-one".