200002001001997 has 2 divisors, whose sum is σ = 200002001001998. Its totient is φ = 200002001001996.

The previous prime is 200002001001947. The next prime is 200002001002007. The reversal of 200002001001997 is 799100100200002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117031417427236 + 82970583574761 = 10818106^2 + 9108819^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200002001001997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200002001001947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100001000500998 + 100001000500999.

It is an arithmetic number, because the mean of its divisors is an integer number (100001000500999).

Almost surely, 2^{200002001001997} is an apocalyptic number.

It is an amenable number.

200002001001997 is a deficient number, since it is larger than the sum of its proper divisors (1).

200002001001997 is an equidigital number, since it uses as much as digits as its factorization.

200002001001997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 31.

Adding to 200002001001997 its reverse (799100100200002), we get a palindrome (999102101201999).

The spelling of 200002001001997 in words is "two hundred trillion, two billion, one million, one thousand, nine hundred ninety-seven".