122206730561 has 2 divisors, whose sum is σ = 122206730562. Its totient is φ = 122206730560.

The previous prime is 122206730543. The next prime is 122206730609. The reversal of 122206730561 is 165037602221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85436367025 + 36770363536 = 292295^2 + 191756^2 .

It is a cyclic number.

It is not a de Polignac number, because 122206730561 - 2²² = 122202536257 is a prime.

It is not a weakly prime, because it can be changed into another prime (122206730531) 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, 61103365280 + 61103365281.

It is an arithmetic number, because the mean of its divisors is an integer number (61103365281).

Almost surely, 2^122206730561 is an apocalyptic number.

It is an amenable number.

122206730561 is a deficient number, since it is larger than the sum of its proper divisors (1).

122206730561 is an equidigital number, since it uses as much as digits as its factorization.

122206730561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 35.

The spelling of 122206730561 in words is "one hundred twenty-two billion, two hundred six million, seven hundred thirty thousand, five hundred sixty-one".