211210203319987 has 2 divisors, whose sum is σ = 211210203319988. Its totient is φ = 211210203319986.

The previous prime is 211210203319949. The next prime is 211210203320041. The reversal of 211210203319987 is 789913302012112.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211210203319987 is a prime.

It is a super-2 number, since 2×211210203319987² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 211210203319987.

It is not a weakly prime, because it can be changed into another prime (211210203319387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105605101659993 + 105605101659994.

It is an arithmetic number, because the mean of its divisors is an integer number (105605101659994).

Almost surely, 2^{211210203319987} is an apocalyptic number.

211210203319987 is a deficient number, since it is larger than the sum of its proper divisors (1).

211210203319987 is an equidigital number, since it uses as much as digits as its factorization.

211210203319987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 49.

The spelling of 211210203319987 in words is "two hundred eleven trillion, two hundred ten billion, two hundred three million, three hundred nineteen thousand, nine hundred eighty-seven".