20002230321 has 16 divisors (see below), whose sum is σ = 27365944320. Its totient is φ = 12988397520.

The previous prime is 20002230319. The next prime is 20002230323. The reversal of 20002230321 is 12303220002.

It is an interprime number because it is at equal distance from previous prime (20002230319) and next prime (20002230323).

It is not a de Polignac number, because 20002230321 - 2¹ = 20002230319 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20002230321.

It is not an unprimeable number, because it can be changed into a prime (20002230323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169645 + ... + 262266.

It is an arithmetic number, because the mean of its divisors is an integer number (1710371520).

Almost surely, 2^20002230321 is an apocalyptic number.

It is an amenable number.

20002230321 is a deficient number, since it is larger than the sum of its proper divisors (7363713999).

20002230321 is a wasteful number, since it uses less digits than its factorization.

20002230321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432316.

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

Adding to 20002230321 its reverse (12303220002), we get a palindrome (32305450323).

The spelling of 20002230321 in words is "twenty billion, two million, two hundred thirty thousand, three hundred twenty-one".