20030430221 has 8 divisors (see below), whose sum is σ = 20192001024. Its totient is φ = 19868919840.

The previous prime is 20030430143. The next prime is 20030430263. The reversal of 20030430221 is 12203403002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20030430221 - 2³⁰ = 18956688397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20030430221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20030430521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 847241 + ... + 870561.

It is an arithmetic number, because the mean of its divisors is an integer number (2524000128).

Almost surely, 2^20030430221 is an apocalyptic number.

It is an amenable number.

20030430221 is a deficient number, since it is larger than the sum of its proper divisors (161570803).

20030430221 is a wasteful number, since it uses less digits than its factorization.

20030430221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30211.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 20030430221 its reverse (12203403002), we get a palindrome (32233833223).

The spelling of 20030430221 in words is "twenty billion, thirty million, four hundred thirty thousand, two hundred twenty-one".