321201221023 has 2 divisors, whose sum is σ = 321201221024. Its totient is φ = 321201221022.

The previous prime is 321201220981. The next prime is 321201221053. The reversal of 321201221023 is 320122102123.

It is a strong prime.

It is an emirp because it is prime and its reverse (320122102123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 321201221023 - 2²⁵ = 321167666591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321201221053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160600610511 + 160600610512.

It is an arithmetic number, because the mean of its divisors is an integer number (160600610512).

Almost surely, 2^321201221023 is an apocalyptic number.

321201221023 is a deficient number, since it is larger than the sum of its proper divisors (1).

321201221023 is an equidigital number, since it uses as much as digits as its factorization.

321201221023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 321201221023 its reverse (320122102123), we get a palindrome (641323323146).

The spelling of 321201221023 in words is "three hundred twenty-one billion, two hundred one million, two hundred twenty-one thousand, twenty-three".