321213101312 has 36 divisors (see below), whose sum is σ = 641213582100. Its totient is φ = 160596000768.

The previous prime is 321213101263. The next prime is 321213101323. The reversal of 321213101312 is 213101312123.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 130823996416 + 190389104896 = 361696^2 + 436336^2 .

It is a super-2 number, since 2×321213101312² (a number of 24 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 5127008 + ... + 5189280.

Almost surely, 2^321213101312 is an apocalyptic number.

321213101312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

321213101312 is a deficient number, since it is larger than the sum of its proper divisors (320000480788).

321213101312 is an equidigital number, since it uses as much as digits as its factorization.

321213101312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82438 (or 82424 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 321213101312 its reverse (213101312123), we get a palindrome (534314413435).

The spelling of 321213101312 in words is "three hundred twenty-one billion, two hundred thirteen million, one hundred one thousand, three hundred twelve".