211401964811 has 2 divisors, whose sum is σ = 211401964812. Its totient is φ = 211401964810.

The previous prime is 211401964799. The next prime is 211401964831. The reversal of 211401964811 is 118469104112.

211401964811 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211401964811 is a prime.

It is not a weakly prime, because it can be changed into another prime (211401964831) 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, 105700982405 + 105700982406.

It is an arithmetic number, because the mean of its divisors is an integer number (105700982406).

Almost surely, 2^211401964811 is an apocalyptic number.

211401964811 is a deficient number, since it is larger than the sum of its proper divisors (1).

211401964811 is an equidigital number, since it uses as much as digits as its factorization.

211401964811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 38.

The spelling of 211401964811 in words is "two hundred eleven billion, four hundred one million, nine hundred sixty-four thousand, eight hundred eleven".