321213313201 has 12 divisors (see below), whose sum is σ = 353085161716. Its totient is φ = 291998884320.

The previous prime is 321213313199. The next prime is 321213313241. The reversal of 321213313201 is 102313312123.

It can be written as a sum of positive squares in 2 ways, for example, as 17016941601 + 304196371600 = 130449^2 + 551540^2 .

It is not a de Polignac number, because 321213313201 - 2¹ = 321213313199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321213313241) 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, 3484435 + ... + 3575431.

Almost surely, 2^321213313201 is an apocalyptic number.

It is an amenable number.

321213313201 is a deficient number, since it is larger than the sum of its proper divisors (31871848515).

321213313201 is a wasteful number, since it uses less digits than its factorization.

321213313201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120192 (or 120181 counting only the distinct ones).

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

Adding to 321213313201 its reverse (102313312123), we get a palindrome (423526625324).

The spelling of 321213313201 in words is "three hundred twenty-one billion, two hundred thirteen million, three hundred thirteen thousand, two hundred one".