200020210997 has 2 divisors, whose sum is σ = 200020210998. Its totient is φ = 200020210996.

The previous prime is 200020210991. The next prime is 200020211077. The reversal of 200020210997 is 799012020002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 171755540356 + 28264670641 = 414434^2 + 168121^2 .

It is a cyclic number.

It is not a de Polignac number, because 200020210997 - 2³⁰ = 198946469173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200020210991) 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, 100010105498 + 100010105499.

It is an arithmetic number, because the mean of its divisors is an integer number (100010105499).

Almost surely, 2^200020210997 is an apocalyptic number.

It is an amenable number.

200020210997 is a deficient number, since it is larger than the sum of its proper divisors (1).

200020210997 is an equidigital number, since it uses as much as digits as its factorization.

200020210997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 32.

Adding to 200020210997 its reverse (799012020002), we get a palindrome (999032230999).

The spelling of 200020210997 in words is "two hundred billion, twenty million, two hundred ten thousand, nine hundred ninety-seven".