200021200201987 has 2 divisors, whose sum is σ = 200021200201988. Its totient is φ = 200021200201986.

The previous prime is 200021200201981. The next prime is 200021200202011. The reversal of 200021200201987 is 789102002120002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 200021200201987 - 2³¹ = 200019052718339 is a prime.

It is not a weakly prime, because it can be changed into another prime (200021200201981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100010600100993 + 100010600100994.

It is an arithmetic number, because the mean of its divisors is an integer number (100010600100994).

Almost surely, 2^{200021200201987} is an apocalyptic number.

200021200201987 is a deficient number, since it is larger than the sum of its proper divisors (1).

200021200201987 is an equidigital number, since it uses as much as digits as its factorization.

200021200201987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 34.

Adding to 200021200201987 its reverse (789102002120002), we get a palindrome (989123202321989).

The spelling of 200021200201987 in words is "two hundred trillion, twenty-one billion, two hundred million, two hundred one thousand, nine hundred eighty-seven".