321204121223 has 2 divisors, whose sum is σ = 321204121224. Its totient is φ = 321204121222.

The previous prime is 321204121213. The next prime is 321204121229. The reversal of 321204121223 is 322121402123.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321204121223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321204121229) 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 as a sum of consecutive naturals, namely, 160602060611 + 160602060612.

It is an arithmetic number, because the mean of its divisors is an integer number (160602060612).

Almost surely, 2^321204121223 is an apocalyptic number.

321204121223 is a deficient number, since it is larger than the sum of its proper divisors (1).

321204121223 is an equidigital number, since it uses as much as digits as its factorization.

321204121223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 321204121223 its reverse (322121402123), we get a palindrome (643325523346).

The spelling of 321204121223 in words is "three hundred twenty-one billion, two hundred four million, one hundred twenty-one thousand, two hundred twenty-three".