20321133130312 has 128 divisors (see below), whose sum is σ = 46092787200000. Its totient is φ = 8204787924480.

The previous prime is 20321133130303. The next prime is 20321133130339. The reversal of 20321133130312 is 21303133112302.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 149124913 + ... + 149261119.

It is an arithmetic number, because the mean of its divisors is an integer number (360099900000).

Almost surely, 2^{20321133130312} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20321133130312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23046393600000).

20321133130312 is an abundant number, since it is smaller than the sum of its proper divisors (25771654069688).

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

20321133130312 is a wasteful number, since it uses less digits than its factorization.

20321133130312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137019 (or 137015 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 20321133130312 its reverse (21303133112302), we get a palindrome (41624266242614).

The spelling of 20321133130312 in words is "twenty trillion, three hundred twenty-one billion, one hundred thirty-three million, one hundred thirty thousand, three hundred twelve".