200200121197 has 2 divisors, whose sum is σ = 200200121198. Its totient is φ = 200200121196.

The previous prime is 200200121179. The next prime is 200200121203. The reversal of 200200121197 is 791121002002.

Together with previous prime (200200121179) 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., 143160829956 + 57039291241 = 378366^2 + 238829^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200200121197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200200128197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100100060598 + 100100060599.

It is an arithmetic number, because the mean of its divisors is an integer number (100100060599).

Almost surely, 2^200200121197 is an apocalyptic number.

It is an amenable number.

200200121197 is a deficient number, since it is larger than the sum of its proper divisors (1).

200200121197 is an equidigital number, since it uses as much as digits as its factorization.

200200121197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 25.

Adding to 200200121197 its reverse (791121002002), we get a palindrome (991321123199).

The spelling of 200200121197 in words is "two hundred billion, two hundred million, one hundred twenty-one thousand, one hundred ninety-seven".