1321331200312 has 16 divisors (see below), whose sum is σ = 2477590110360. Its totient is φ = 660640504224.

The previous prime is 1321331200261. The next prime is 1321331200313. The reversal of 1321331200312 is 2130021331231.

It is a super-2 number, since 2×1321331200312² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321331200313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2912278 + ... + 3335269.

Almost surely, 2^{1321331200312} is an apocalyptic number.

It is an amenable number.

1321331200312 is a deficient number, since it is larger than the sum of its proper divisors (1156258910048).

1321331200312 is a wasteful number, since it uses less digits than its factorization.

1321331200312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6273990 (or 6273986 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1321331200312 its reverse (2130021331231), we get a palindrome (3451352531543).

The spelling of 1321331200312 in words is "one trillion, three hundred twenty-one billion, three hundred thirty-one million, two hundred thousand, three hundred twelve".