331220210120 has 16 divisors (see below), whose sum is σ = 745245472860. Its totient is φ = 132488084032.

The previous prime is 331220210081. The next prime is 331220210147. The reversal of 331220210120 is 21012022133.

It can be written as a sum of positive squares in 2 ways, for example, as 280639300516 + 50580909604 = 529754^2 + 224902^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4140252587 + ... + 4140252666.

Almost surely, 2^331220210120 is an apocalyptic number.

It is an amenable number.

331220210120 is an abundant number, since it is smaller than the sum of its proper divisors (414025262740).

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

331220210120 is a wasteful number, since it uses less digits than its factorization.

331220210120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8280505264 (or 8280505260 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 331220210120 its reverse (21012022133), we get a palindrome (352232232253).

The spelling of 331220210120 in words is "three hundred thirty-one billion, two hundred twenty million, two hundred ten thousand, one hundred twenty".