20331321233212 has 48 divisors (see below), whose sum is σ = 38897044179840. Its totient is φ = 9221835585600.

The previous prime is 20331321233189. The next prime is 20331321233213. The reversal of 20331321233212 is 21233212313302.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20331321233213) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 47104839 + ... + 47534497.

It is an arithmetic number, because the mean of its divisors is an integer number (810355087080).

Almost surely, 2^{20331321233212} is an apocalyptic number.

20331321233212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20331321233212 is a deficient number, since it is larger than the sum of its proper divisors (18565722946628).

20331321233212 is a wasteful number, since it uses less digits than its factorization.

20331321233212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431962 (or 431960 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 20331321233212 its reverse (21233212313302), we get a palindrome (41564533546514).

The spelling of 20331321233212 in words is "twenty trillion, three hundred thirty-one billion, three hundred twenty-one million, two hundred thirty-three thousand, two hundred twelve".