200001000099961 has 2 divisors, whose sum is σ = 200001000099962. Its totient is φ = 200001000099960.

The previous prime is 200001000099949. The next prime is 200001000100001. The reversal of 200001000099961 is 169990000100002.

200001000099961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199058801792400 + 942198307561 = 14108820^2 + 970669^2 .

It is a cyclic number.

It is not a de Polignac number, because 200001000099961 - 2⁹ = 200001000099449 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 200001000099961.

It is not a weakly prime, because it can be changed into another prime (200001000099941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100000500049980 + 100000500049981.

It is an arithmetic number, because the mean of its divisors is an integer number (100000500049981).

Almost surely, 2^{200001000099961} is an apocalyptic number.

It is an amenable number.

200001000099961 is a deficient number, since it is larger than the sum of its proper divisors (1).

200001000099961 is an equidigital number, since it uses as much as digits as its factorization.

200001000099961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 37.

Adding to 200001000099961 its reverse (169990000100002), we get a palindrome (369991000199963).

The spelling of 200001000099961 in words is "two hundred trillion, one billion, ninety-nine thousand, nine hundred sixty-one".