320122330261 has 2 divisors, whose sum is σ = 320122330262. Its totient is φ = 320122330260.

The previous prime is 320122330249. The next prime is 320122330277. The reversal of 320122330261 is 162033221023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 316399500036 + 3722830225 = 562494^2 + 61015^2 .

It is a cyclic number.

It is not a de Polignac number, because 320122330261 - 2⁷ = 320122330133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320122330201) 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 as a sum of consecutive naturals, namely, 160061165130 + 160061165131.

It is an arithmetic number, because the mean of its divisors is an integer number (160061165131).

Almost surely, 2^320122330261 is an apocalyptic number.

It is an amenable number.

320122330261 is a deficient number, since it is larger than the sum of its proper divisors (1).

320122330261 is an equidigital number, since it uses as much as digits as its factorization.

320122330261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 320122330261 its reverse (162033221023), we get a palindrome (482155551284).

The spelling of 320122330261 in words is "three hundred twenty billion, one hundred twenty-two million, three hundred thirty thousand, two hundred sixty-one".