20330321312 has 48 divisors (see below), whose sum is σ = 45776086272. Its totient is φ = 8706735360.

The previous prime is 20330321311. The next prime is 20330321329. The reversal of 20330321312 is 21312303302.

It is a super-2 number, since 2×20330321312² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20330321311) 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, 286862 + ... + 350642.

It is an arithmetic number, because the mean of its divisors is an integer number (953668464).

Almost surely, 2^20330321312 is an apocalyptic number.

It is an amenable number.

20330321312 is an abundant number, since it is smaller than the sum of its proper divisors (25445764960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20330321312 is a wasteful number, since it uses less digits than its factorization.

20330321312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65221 (or 65213 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 20330321312 its reverse (21312303302), we get a palindrome (41642624614).

The spelling of 20330321312 in words is "twenty billion, three hundred thirty million, three hundred twenty-one thousand, three hundred twelve".