321243421121 has 8 divisors (see below), whose sum is σ = 379795177920. Its totient is φ = 265856624208.

The previous prime is 321243421097. The next prime is 321243421123. The reversal of 321243421121 is 121124342123.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 321243421121 - 2¹⁰ = 321243420097 is a prime.

It is a super-2 number, since 2×321243421121² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (321243421123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 791239751 + ... + 791240156.

It is an arithmetic number, because the mean of its divisors is an integer number (47474397240).

Almost surely, 2^321243421121 is an apocalyptic number.

It is an amenable number.

321243421121 is a deficient number, since it is larger than the sum of its proper divisors (58551756799).

321243421121 is a wasteful number, since it uses less digits than its factorization.

321243421121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1582479943.

The product of its digits is 2304, while the sum is 26.

Adding to 321243421121 its reverse (121124342123), we get a palindrome (442367763244).

The spelling of 321243421121 in words is "three hundred twenty-one billion, two hundred forty-three million, four hundred twenty-one thousand, one hundred twenty-one".