321222323201 has 4 divisors (see below), whose sum is σ = 345931732692. Its totient is φ = 296512913712.

The previous prime is 321222323179. The next prime is 321222323321. The reversal of 321222323201 is 102323222123.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 102323222123 = 103 ⋅993429341.

It can be written as a sum of positive squares in 2 ways, for example, as 74953298176 + 246269025025 = 273776^2 + 496255^2 .

It is a cyclic number.

It is not a de Polignac number, because 321222323201 - 2²² = 321218128897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (321222623201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12354704726 + ... + 12354704751.

It is an arithmetic number, because the mean of its divisors is an integer number (86482933173).

Almost surely, 2^321222323201 is an apocalyptic number.

It is an amenable number.

321222323201 is a deficient number, since it is larger than the sum of its proper divisors (24709409491).

321222323201 is a wasteful number, since it uses less digits than its factorization.

321222323201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24709409490.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 321222323201 its reverse (102323222123), we get a palindrome (423545545324).

The spelling of 321222323201 in words is "three hundred twenty-one billion, two hundred twenty-two million, three hundred twenty-three thousand, two hundred one".