321211213332 has 12 divisors (see below), whose sum is σ = 749492831136. Its totient is φ = 107070404440.

The previous prime is 321211213319. The next prime is 321211213339. The reversal of 321211213332 is 233312112123.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×321211213332² (a number of 24 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321211213339) 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, 13383800544 + ... + 13383800567.

It is an arithmetic number, because the mean of its divisors is an integer number (62457735928).

Almost surely, 2^321211213332 is an apocalyptic number.

It is an amenable number.

321211213332 is an abundant number, since it is smaller than the sum of its proper divisors (428281617804).

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

321211213332 is a wasteful number, since it uses less digits than its factorization.

321211213332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26767601118 (or 26767601116 counting only the distinct ones).

The product of its digits is 1296, while the sum is 24.

Adding to 321211213332 its reverse (233312112123), we get a palindrome (554523325455).

The spelling of 321211213332 in words is "three hundred twenty-one billion, two hundred eleven million, two hundred thirteen thousand, three hundred thirty-two".