20010332321 has 24 divisors (see below), whose sum is σ = 24048126720. Its totient is φ = 16584674400.

The previous prime is 20010332299. The next prime is 20010332339. The reversal of 20010332321 is 12323301002.

It is a de Polignac number, because none of the positive numbers 2^k-20010332321 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 20010332321.

It is not an unprimeable number, because it can be changed into a prime (20010332521) 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, 2092970 + ... + 2102508.

It is an arithmetic number, because the mean of its divisors is an integer number (1002005280).

Almost surely, 2^20010332321 is an apocalyptic number.

It is an amenable number.

20010332321 is a deficient number, since it is larger than the sum of its proper divisors (4037794399).

20010332321 is a wasteful number, since it uses less digits than its factorization.

20010332321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10965 (or 10958 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20010332321 its reverse (12323301002), we get a palindrome (32333633323).

The spelling of 20010332321 in words is "twenty billion, ten million, three hundred thirty-two thousand, three hundred twenty-one".