321441134403221 has 4 divisors (see below), whose sum is σ = 367361296460832. Its totient is φ = 275520972345612.

The previous prime is 321441134403161. The next prime is 321441134403229. The reversal of 321441134403221 is 122304431144123.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 321441134403221 - 2¹⁴ = 321441134386837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321441134403229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22960081028795 + ... + 22960081028808.

It is an arithmetic number, because the mean of its divisors is an integer number (91840324115208).

Almost surely, 2^{321441134403221} is an apocalyptic number.

It is an amenable number.

321441134403221 is a deficient number, since it is larger than the sum of its proper divisors (45920162057611).

321441134403221 is an equidigital number, since it uses as much as digits as its factorization.

321441134403221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45920162057610.

The product of its (nonzero) digits is 55296, while the sum is 35.

Adding to 321441134403221 its reverse (122304431144123), we get a palindrome (443745565547344).

The spelling of 321441134403221 in words is "three hundred twenty-one trillion, four hundred forty-one billion, one hundred thirty-four million, four hundred three thousand, two hundred twenty-one".