211156282189 has 2 divisors, whose sum is σ = 211156282190. Its totient is φ = 211156282188.

The previous prime is 211156282171. The next prime is 211156282199. The reversal of 211156282189 is 981282651112.

211156282189 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 can be written as a sum of positive squares in only one way, i.e., 135528532164 + 75627750025 = 368142^2 + 275005^2 .

It is a cyclic number.

It is not a de Polignac number, because 211156282189 - 2¹³ = 211156273997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211156282199) 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, 105578141094 + 105578141095.

It is an arithmetic number, because the mean of its divisors is an integer number (105578141095).

Almost surely, 2^211156282189 is an apocalyptic number.

It is an amenable number.

211156282189 is a deficient number, since it is larger than the sum of its proper divisors (1).

211156282189 is an equidigital number, since it uses as much as digits as its factorization.

211156282189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138240, while the sum is 46.

The spelling of 211156282189 in words is "two hundred eleven billion, one hundred fifty-six million, two hundred eighty-two thousand, one hundred eighty-nine".