212212122247 has 2 divisors, whose sum is σ = 212212122248. Its totient is φ = 212212122246.

The previous prime is 212212122193. The next prime is 212212122277. The reversal of 212212122247 is 742221212212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212212122247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212212122277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106106061123 + 106106061124.

It is an arithmetic number, because the mean of its divisors is an integer number (106106061124).

Almost surely, 2^212212122247 is an apocalyptic number.

212212122247 is a deficient number, since it is larger than the sum of its proper divisors (1).

212212122247 is an equidigital number, since it uses as much as digits as its factorization.

212212122247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3584, while the sum is 28.

Adding to 212212122247 its reverse (742221212212), we get a palindrome (954433334459).

The spelling of 212212122247 in words is "two hundred twelve billion, two hundred twelve million, one hundred twenty-two thousand, two hundred forty-seven".