20324427321 has 16 divisors (see below), whose sum is σ = 30063870720. Its totient is φ = 12109056720.

The previous prime is 20324427317. The next prime is 20324427329. The reversal of 20324427321 is 12372442302.

It is not a de Polignac number, because 20324427321 - 2² = 20324427317 is a prime.

It is a super-2 number, since 2×20324427321² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20324427329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5217475 + ... + 5221368.

It is an arithmetic number, because the mean of its divisors is an integer number (1878991920).

Almost surely, 2^20324427321 is an apocalyptic number.

It is an amenable number.

20324427321 is a deficient number, since it is larger than the sum of its proper divisors (9739443399).

20324427321 is a wasteful number, since it uses less digits than its factorization.

20324427321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10438916.

The product of its (nonzero) digits is 16128, while the sum is 30.

Adding to 20324427321 its reverse (12372442302), we get a palindrome (32696869623).

The spelling of 20324427321 in words is "twenty billion, three hundred twenty-four million, four hundred twenty-seven thousand, three hundred twenty-one".