211156797227 has 2 divisors, whose sum is σ = 211156797228. Its totient is φ = 211156797226.

The previous prime is 211156797193. The next prime is 211156797277. The reversal of 211156797227 is 722797651112.

211156797227 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (211156797277) can be obtained adding 211156797227 to its sum of digits (50).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211156797227 - 2⁸ = 211156796971 is a prime.

It is not a weakly prime, because it can be changed into another prime (211156797277) 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, 105578398613 + 105578398614.

It is an arithmetic number, because the mean of its divisors is an integer number (105578398614).

Almost surely, 2^211156797227 is an apocalyptic number.

211156797227 is a deficient number, since it is larger than the sum of its proper divisors (1).

211156797227 is an equidigital number, since it uses as much as digits as its factorization.

211156797227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 740880, while the sum is 50.

The spelling of 211156797227 in words is "two hundred eleven billion, one hundred fifty-six million, seven hundred ninety-seven thousand, two hundred twenty-seven".