331220221323112 has 128 divisors (see below), whose sum is σ = 689173425705600. Its totient is φ = 147985052544000.

The previous prime is 331220221323109. The next prime is 331220221323113. The reversal of 331220221323112 is 211323122022133.

It is not an unprimeable number, because it can be changed into a prime (331220221323113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 706032658 + ... + 706501630.

It is an arithmetic number, because the mean of its divisors is an integer number (5384167388325).

Almost surely, 2^{331220221323112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 331220221323112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (344586712852800).

331220221323112 is an abundant number, since it is smaller than the sum of its proper divisors (357953204382488).

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

331220221323112 is a wasteful number, since it uses less digits than its factorization.

331220221323112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469667 (or 469663 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 331220221323112 its reverse (211323122022133), we get a palindrome (542543343345245).

The spelling of 331220221323112 in words is "three hundred thirty-one trillion, two hundred twenty billion, two hundred twenty-one million, three hundred twenty-three thousand, one hundred twelve".