122306568809 has 2 divisors, whose sum is σ = 122306568810. Its totient is φ = 122306568808.

The previous prime is 122306568803. The next prime is 122306568851. The reversal of 122306568809 is 908865603221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104358072025 + 17948496784 = 323045^2 + 133972^2 .

It is an emirp because it is prime and its reverse (908865603221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122306568809 is a prime.

It is not a weakly prime, because it can be changed into another prime (122306568803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61153284404 + 61153284405.

It is an arithmetic number, because the mean of its divisors is an integer number (61153284405).

Almost surely, 2^122306568809 is an apocalyptic number.

It is an amenable number.

122306568809 is a deficient number, since it is larger than the sum of its proper divisors (1).

122306568809 is an equidigital number, since it uses as much as digits as its factorization.

122306568809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1244160, while the sum is 50.

The spelling of 122306568809 in words is "one hundred twenty-two billion, three hundred six million, five hundred sixty-eight thousand, eight hundred nine".