321333400211221 has 12 divisors (see below), whose sum is σ = 334468288804000. Its totient is φ = 308693877983568.

The previous prime is 321333400211207. The next prime is 321333400211227. The reversal of 321333400211221 is 122112004333123.

It is not a de Polignac number, because 321333400211221 - 2⁴⁵ = 286149028122389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 321333400211221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321333400211227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 959844951 + ... + 960179668.

Almost surely, 2^{321333400211221} is an apocalyptic number.

It is an amenable number.

321333400211221 is a deficient number, since it is larger than the sum of its proper divisors (13134888592779).

321333400211221 is a wasteful number, since it uses less digits than its factorization.

321333400211221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1920024876 (or 1920024847 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 321333400211221 its reverse (122112004333123), we get a palindrome (443445404544344).

The spelling of 321333400211221 in words is "three hundred twenty-one trillion, three hundred thirty-three billion, four hundred million, two hundred eleven thousand, two hundred twenty-one".