200000101997 has 2 divisors, whose sum is σ = 200000101998. Its totient is φ = 200000101996.

The previous prime is 200000101979. The next prime is 200000101999. The reversal of 200000101997 is 799101000002.

Together with previous prime (200000101979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 166632138436 + 33367963561 = 408206^2 + 182669^2 .

It is a cyclic number.

It is not a de Polignac number, because 200000101997 - 2¹⁰ = 200000100973 is a prime.

Together with 200000101999, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200000101999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100000050998 + 100000050999.

It is an arithmetic number, because the mean of its divisors is an integer number (100000050999).

Almost surely, 2^200000101997 is an apocalyptic number.

It is an amenable number.

200000101997 is a deficient number, since it is larger than the sum of its proper divisors (1).

200000101997 is an equidigital number, since it uses as much as digits as its factorization.

200000101997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134, while the sum is 29.

Adding to 200000101997 its reverse (799101000002), we get a palindrome (999101101999).

The spelling of 200000101997 in words is "two hundred billion, one hundred one thousand, nine hundred ninety-seven".