212302247 has 2 divisors, whose sum is σ = 212302248. Its totient is φ = 212302246.

The previous prime is 212302241. The next prime is 212302289. The reversal of 212302247 is 742203212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212302247 - 2¹⁶ = 212236711 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212302241) 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, 106151123 + 106151124.

It is an arithmetic number, because the mean of its divisors is an integer number (106151124).

Almost surely, 2^212302247 is an apocalyptic number.

212302247 is a deficient number, since it is larger than the sum of its proper divisors (1).

212302247 is an equidigital number, since it uses as much as digits as its factorization.

212302247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 212302247 is about 14570.5952863979. The cubic root of 212302247 is about 596.5564288017.

Adding to 212302247 its reverse (742203212), we get a palindrome (954505459).

The spelling of 212302247 in words is "two hundred twelve million, three hundred two thousand, two hundred forty-seven".