200020021221247 has 2 divisors, whose sum is σ = 200020021221248. Its totient is φ = 200020021221246.

The previous prime is 200020021221187. The next prime is 200020021221281. The reversal of 200020021221247 is 742122120020002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 200020021221247 - 2¹⁹ = 200020020696959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200020021221547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100010010610623 + 100010010610624.

It is an arithmetic number, because the mean of its divisors is an integer number (100010010610624).

Almost surely, 2^{200020021221247} is an apocalyptic number.

200020021221247 is a deficient number, since it is larger than the sum of its proper divisors (1).

200020021221247 is an equidigital number, since it uses as much as digits as its factorization.

200020021221247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1792, while the sum is 25.

Adding to 200020021221247 its reverse (742122120020002), we get a palindrome (942142141241249).

The spelling of 200020021221247 in words is "two hundred trillion, twenty billion, twenty-one million, two hundred twenty-one thousand, two hundred forty-seven".