200122309043561 has 2 divisors, whose sum is σ = 200122309043562. Its totient is φ = 200122309043560.

The previous prime is 200122309043551. The next prime is 200122309043647. The reversal of 200122309043561 is 165340903221002.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 200046540975961 + 75768067600 = 14143781^2 + 275260^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200122309043561 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (200122309043521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100061154521780 + 100061154521781.

It is an arithmetic number, because the mean of its divisors is an integer number (100061154521781).

Almost surely, 2^{200122309043561} is an apocalyptic number.

It is an amenable number.

200122309043561 is a deficient number, since it is larger than the sum of its proper divisors (1).

200122309043561 is an equidigital number, since it uses as much as digits as its factorization.

200122309043561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 38.

The spelling of 200122309043561 in words is "two hundred trillion, one hundred twenty-two billion, three hundred nine million, forty-three thousand, five hundred sixty-one".