321120333212 has 60 divisors (see below), whose sum is σ = 655969439160. Its totient is φ = 137541606048.

The previous prime is 321120333187. The next prime is 321120333217. The reversal of 321120333212 is 212333021123.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321120333217) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 17921714 + ... + 17939622.

It is an arithmetic number, because the mean of its divisors is an integer number (10932823986).

Almost surely, 2^321120333212 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 321120333212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (327984719580).

321120333212 is an abundant number, since it is smaller than the sum of its proper divisors (334849105948).

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

321120333212 is a wasteful number, since it uses less digits than its factorization.

321120333212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19808 (or 19785 counting only the distinct ones).

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

Adding to 321120333212 its reverse (212333021123), we get a palindrome (533453354335).

The spelling of 321120333212 in words is "three hundred twenty-one billion, one hundred twenty million, three hundred thirty-three thousand, two hundred twelve".