216949942211 has 2 divisors, whose sum is σ = 216949942212. Its totient is φ = 216949942210.

The previous prime is 216949942159. The next prime is 216949942217. The reversal of 216949942211 is 112249949612.

It is a happy number.

216949942211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 216949942211 - 2¹⁴ = 216949925827 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 216949942211.

It is not a weakly prime, because it can be changed into another prime (216949942217) 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, 108474971105 + 108474971106.

It is an arithmetic number, because the mean of its divisors is an integer number (108474971106).

Almost surely, 2^216949942211 is an apocalyptic number.

216949942211 is a deficient number, since it is larger than the sum of its proper divisors (1).

216949942211 is an equidigital number, since it uses as much as digits as its factorization.

216949942211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 50.

The spelling of 216949942211 in words is "two hundred sixteen billion, nine hundred forty-nine million, nine hundred forty-two thousand, two hundred eleven".