212543345227 has 2 divisors, whose sum is σ = 212543345228. Its totient is φ = 212543345226.

The previous prime is 212543345191. The next prime is 212543345237. The reversal of 212543345227 is 722543345212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212543345227 - 2²⁷ = 212409127499 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212543345227.

It is not a weakly prime, because it can be changed into another prime (212543345237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106271672613 + 106271672614.

It is an arithmetic number, because the mean of its divisors is an integer number (106271672614).

Almost surely, 2^212543345227 is an apocalyptic number.

212543345227 is a deficient number, since it is larger than the sum of its proper divisors (1).

212543345227 is an equidigital number, since it uses as much as digits as its factorization.

212543345227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 403200, while the sum is 40.

The spelling of 212543345227 in words is "two hundred twelve billion, five hundred forty-three million, three hundred forty-five thousand, two hundred twenty-seven".