321111303312 has 20 divisors (see below), whose sum is σ = 829537533680. Its totient is φ = 107037101088.

The previous prime is 321111303277. The next prime is 321111303319. The reversal of 321111303312 is 213303111123.

It is a happy number.

It is a super-2 number, since 2×321111303312² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (321111303319) by changing a digit.

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, 3344909362 + ... + 3344909457.

It is an arithmetic number, because the mean of its divisors is an integer number (41476876684).

Almost surely, 2^321111303312 is an apocalyptic number.

It is an amenable number.

321111303312 is an abundant number, since it is smaller than the sum of its proper divisors (508426230368).

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

321111303312 is a wasteful number, since it uses less digits than its factorization.

321111303312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6689818830 (or 6689818824 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 321111303312 its reverse (213303111123), we get a palindrome (534414414435).

The spelling of 321111303312 in words is "three hundred twenty-one billion, one hundred eleven million, three hundred three thousand, three hundred twelve".