212230243 has 2 divisors, whose sum is σ = 212230244. Its totient is φ = 212230242.

The previous prime is 212230237. The next prime is 212230273. The reversal of 212230243 is 342032212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212230243 - 2⁵ = 212230211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212230243.

It is not a weakly prime, because it can be changed into another prime (212230273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106115121 + 106115122.

It is an arithmetic number, because the mean of its divisors is an integer number (106115122).

Almost surely, 2^212230243 is an apocalyptic number.

212230243 is a deficient number, since it is larger than the sum of its proper divisors (1).

212230243 is an equidigital number, since it uses as much as digits as its factorization.

212230243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 212230243 is about 14568.1242100691. The cubic root of 212230243 is about 596.4889788858.

Adding to 212230243 its reverse (342032212), we get a palindrome (554262455).

The spelling of 212230243 in words is "two hundred twelve million, two hundred thirty thousand, two hundred forty-three".