321420300334321 has 4 divisors (see below), whose sum is σ = 321420373664500. Its totient is φ = 321420227004144.

The previous prime is 321420300334319. The next prime is 321420300334381. The reversal of 321420300334321 is 123433003024123.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 117560586911296 + 203859713423025 = 10842536^2 + 14277945^2 .

It is a cyclic number.

It is not a de Polignac number, because 321420300334321 - 2¹ = 321420300334319 is a prime.

It is a super-2 number, since 2×321420300334321² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321420300334381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29641866 + ... + 39006163.

It is an arithmetic number, because the mean of its divisors is an integer number (80355093416125).

Almost surely, 2^{321420300334321} is an apocalyptic number.

It is an amenable number.

321420300334321 is a deficient number, since it is larger than the sum of its proper divisors (73330179).

321420300334321 is an equidigital number, since it uses as much as digits as its factorization.

321420300334321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73330178.

The product of its (nonzero) digits is 31104, while the sum is 31.

Adding to 321420300334321 its reverse (123433003024123), we get a palindrome (444853303358444).

The spelling of 321420300334321 in words is "three hundred twenty-one trillion, four hundred twenty billion, three hundred million, three hundred thirty-four thousand, three hundred twenty-one".