211218904859 has 2 divisors, whose sum is σ = 211218904860. Its totient is φ = 211218904858.

The previous prime is 211218904849. The next prime is 211218904867. The reversal of 211218904859 is 958409812112.

211218904859 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 211218904859 - 2⁴ = 211218904843 is a prime.

It is a super-2 number, since 2×211218904859² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (211218904849) 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, 105609452429 + 105609452430.

It is an arithmetic number, because the mean of its divisors is an integer number (105609452430).

Almost surely, 2^211218904859 is an apocalyptic number.

211218904859 is a deficient number, since it is larger than the sum of its proper divisors (1).

211218904859 is an equidigital number, since it uses as much as digits as its factorization.

211218904859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 414720, while the sum is 50.

The spelling of 211218904859 in words is "two hundred eleven billion, two hundred eighteen million, nine hundred four thousand, eight hundred fifty-nine".