20331321212120 has 64 divisors (see below), whose sum is σ = 48594901212000. Its totient is φ = 7633817146368.

The previous prime is 20331321212099. The next prime is 20331321212179. The reversal of 20331321212120 is 2121212313302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122631557 + ... + 122797236.

Almost surely, 2^{20331321212120} is an apocalyptic number.

20331321212120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20331321212120 is an abundant number, since it is smaller than the sum of its proper divisors (28263579999880).

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

20331321212120 is a wasteful number, since it uses less digits than its factorization.

20331321212120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245428932 (or 245428928 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 20331321212120 its reverse (2121212313302), we get a palindrome (22452533525422).

The spelling of 20331321212120 in words is "twenty trillion, three hundred thirty-one billion, three hundred twenty-one million, two hundred twelve thousand, one hundred twenty".