321213443424412 has 192 divisors, whose sum is σ = 758205855912960. Its totient is φ = 115272867225600.

The previous prime is 321213443424353. The next prime is 321213443424457. The reversal of 321213443424412 is 214424344312123.

It is a congruent number.

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 63 ways as a sum of consecutive naturals, for example, 296747212 + ... + 297827692.

It is an arithmetic number, because the mean of its divisors is an integer number (3948988832880).

Almost surely, 2^{321213443424412} 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 321213443424412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (379102927956480).

321213443424412 is an abundant number, since it is smaller than the sum of its proper divisors (436992412488548).

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

321213443424412 is a wasteful number, since it uses less digits than its factorization.

321213443424412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081932 (or 1081930 counting only the distinct ones).

The product of its digits is 442368, while the sum is 40.

Adding to 321213443424412 its reverse (214424344312123), we get a palindrome (535637787736535).

The spelling of 321213443424412 in words is "three hundred twenty-one trillion, two hundred thirteen billion, four hundred forty-three million, four hundred twenty-four thousand, four hundred twelve".