200121020330191 has 2 divisors, whose sum is σ = 200121020330192. Its totient is φ = 200121020330190.

The previous prime is 200121020330173. The next prime is 200121020330207. The reversal of 200121020330191 is 191033020121002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 200121020330191 - 2²⁹ = 200120483459279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200121020390191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100060510165095 + 100060510165096.

It is an arithmetic number, because the mean of its divisors is an integer number (100060510165096).

Almost surely, 2^{200121020330191} is an apocalyptic number.

200121020330191 is a deficient number, since it is larger than the sum of its proper divisors (1).

200121020330191 is an equidigital number, since it uses as much as digits as its factorization.

200121020330191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 25.

Adding to 200121020330191 its reverse (191033020121002), we get a palindrome (391154040451193).

The spelling of 200121020330191 in words is "two hundred trillion, one hundred twenty-one billion, twenty million, three hundred thirty thousand, one hundred ninety-one".