20332221131312 has 120 divisors (see below), whose sum is σ = 42008607951120. Its totient is φ = 9530969817600.

The previous prime is 20332221131263. The next prime is 20332221131317. The reversal of 20332221131312 is 21313112223302.

It is a super-2 number, since 2×20332221131312² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20332221131317) 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, 1361008739 + ... + 1361023677.

It is an arithmetic number, because the mean of its divisors is an integer number (350071732926).

Almost surely, 2^{20332221131312} 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 20332221131312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21004303975560).

20332221131312 is an abundant number, since it is smaller than the sum of its proper divisors (21676386819808).

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

20332221131312 is a wasteful number, since it uses less digits than its factorization.

20332221131312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17419 (or 17394 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 20332221131312 its reverse (21313112223302), we get a palindrome (41645333354614).

The spelling of 20332221131312 in words is "twenty trillion, three hundred thirty-two billion, two hundred twenty-one million, one hundred thirty-one thousand, three hundred twelve".