331221223000020 has 96 divisors (see below), whose sum is σ = 927884312208000. Its totient is φ = 88281387938304.

The previous prime is 331221222999971. The next prime is 331221223000043. The reversal of 331221223000020 is 20000322122133.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4595344222 + ... + 4595416298.

It is an arithmetic number, because the mean of its divisors is an integer number (9665461585500).

Almost surely, 2^{331221223000020} is an apocalyptic number.

331221223000020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

331221223000020 is an abundant number, since it is smaller than the sum of its proper divisors (596663089207980).

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

331221223000020 is a wasteful number, since it uses less digits than its factorization.

331221223000020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109417 (or 109415 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 331221223000020 its reverse (20000322122133), we get a palindrome (351221545122153).

The spelling of 331221223000020 in words is "three hundred thirty-one trillion, two hundred twenty-one billion, two hundred twenty-three million, twenty", and thus it is an aban number.