321223322137 has 2 divisors, whose sum is σ = 321223322138. Its totient is φ = 321223322136.

The previous prime is 321223322107. The next prime is 321223322159. The reversal of 321223322137 is 731223322123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 285828167641 + 35395154496 = 534629^2 + 188136^2 .

It is a cyclic number.

It is not a de Polignac number, because 321223322137 - 2⁷ = 321223322009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 321223322099 and 321223322108.

It is not a weakly prime, because it can be changed into another prime (321223322107) 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, 160611661068 + 160611661069.

It is an arithmetic number, because the mean of its divisors is an integer number (160611661069).

Almost surely, 2^321223322137 is an apocalyptic number.

It is an amenable number.

321223322137 is a deficient number, since it is larger than the sum of its proper divisors (1).

321223322137 is an equidigital number, since it uses as much as digits as its factorization.

321223322137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 31.

The spelling of 321223322137 in words is "three hundred twenty-one billion, two hundred twenty-three million, three hundred twenty-two thousand, one hundred thirty-seven".