12331221033020 has 48 divisors (see below), whose sum is σ = 26823717345600. Its totient is φ = 4756144350720.

The previous prime is 12331221033017. The next prime is 12331221033031. The reversal of 12331221033020 is 2033012213321.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13527560 + ... + 14410319.

It is an arithmetic number, because the mean of its divisors is an integer number (558827444700).

Almost surely, 2^{12331221033020} is an apocalyptic number.

12331221033020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12331221033020 is an abundant number, since it is smaller than the sum of its proper divisors (14492496312580).

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

12331221033020 is a wasteful number, since it uses less digits than its factorization.

12331221033020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27938678 (or 27938676 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 12331221033020 its reverse (2033012213321), we get a palindrome (14364233246341).

The spelling of 12331221033020 in words is "twelve trillion, three hundred thirty-one billion, two hundred twenty-one million, thirty-three thousand, twenty".