322320021161 has 2 divisors, whose sum is σ = 322320021162. Its totient is φ = 322320021160.

The previous prime is 322320021113. The next prime is 322320021193. The reversal of 322320021161 is 161120023223.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 321964321561 + 355699600 = 567419^2 + 18860^2 .

It is a cyclic number.

It is not a de Polignac number, because 322320021161 - 2³⁴ = 305140151977 is a prime.

It is not a weakly prime, because it can be changed into another prime (322320024161) 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, 161160010580 + 161160010581.

It is an arithmetic number, because the mean of its divisors is an integer number (161160010581).

Almost surely, 2^322320021161 is an apocalyptic number.

It is an amenable number.

322320021161 is a deficient number, since it is larger than the sum of its proper divisors (1).

322320021161 is an equidigital number, since it uses as much as digits as its factorization.

322320021161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 322320021161 its reverse (161120023223), we get a palindrome (483440044384).

The spelling of 322320021161 in words is "three hundred twenty-two billion, three hundred twenty million, twenty-one thousand, one hundred sixty-one".