20331222132232 has 96 divisors (see below), whose sum is σ = 42371693040600. Its totient is φ = 9138032640000.

The previous prime is 20331222132211. The next prime is 20331222132289. The reversal of 20331222132232 is 23223122213302.

It can be written as a sum of positive squares in 4 ways, for example, as 20012613814116 + 318608318116 = 4473546^2 + 564454^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20331222132232.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75048382 + ... + 75318802.

Almost surely, 2^{20331222132232} is an apocalyptic number.

20331222132232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20331222132232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21185846520300).

20331222132232 is an abundant number, since it is smaller than the sum of its proper divisors (22040470908368).

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

20331222132232 is a wasteful number, since it uses less digits than its factorization.

20331222132232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271319 (or 271304 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 20331222132232 its reverse (23223122213302), we get a palindrome (43554344345534).

The spelling of 20331222132232 in words is "twenty trillion, three hundred thirty-one billion, two hundred twenty-two million, one hundred thirty-two thousand, two hundred thirty-two".