321220243301121 has 12 divisors (see below), whose sum is σ = 464025954971748. Its totient is φ = 214127832363264.

The previous prime is 321220243301081. The next prime is 321220243301129. The reversal of 321220243301121 is 121103342022123.

321220243301121 is a `hidden beast` number, since 3 + 2 + 1 + 2 + 202 + 4 + 330 + 1 + 121 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 229085297598096 + 92134945703025 = 15135564^2 + 9598695^2 .

It is not a de Polignac number, because 321220243301121 - 2⁷ = 321220243300993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (321220243301129) 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, 1582934920 + ... + 1583137833.

It is an arithmetic number, because the mean of its divisors is an integer number (38668829580979).

Almost surely, 2^{321220243301121} is an apocalyptic number.

It is an amenable number.

321220243301121 is a deficient number, since it is larger than the sum of its proper divisors (142805711670627).

321220243301121 is a wasteful number, since it uses less digits than its factorization.

321220243301121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3166084032 (or 3166084029 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 321220243301121 its reverse (121103342022123), we get a palindrome (442323585323244).

The spelling of 321220243301121 in words is "three hundred twenty-one trillion, two hundred twenty billion, two hundred forty-three million, three hundred one thousand, one hundred twenty-one".