122304561161 has 2 divisors, whose sum is σ = 122304561162. Its totient is φ = 122304561160.

The previous prime is 122304561143. The next prime is 122304561187. The reversal of 122304561161 is 161165403221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118945663225 + 3358897936 = 344885^2 + 57956^2 .

It is a cyclic number.

It is not a de Polignac number, because 122304561161 - 2³⁴ = 105124691977 is a prime.

It is not a weakly prime, because it can be changed into another prime (122304561121) 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, 61152280580 + 61152280581.

It is an arithmetic number, because the mean of its divisors is an integer number (61152280581).

Almost surely, 2^122304561161 is an apocalyptic number.

It is an amenable number.

122304561161 is a deficient number, since it is larger than the sum of its proper divisors (1).

122304561161 is an equidigital number, since it uses as much as digits as its factorization.

122304561161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 32.

Adding to 122304561161 its reverse (161165403221), we get a palindrome (283469964382).

The spelling of 122304561161 in words is "one hundred twenty-two billion, three hundred four million, five hundred sixty-one thousand, one hundred sixty-one".