212424227 has 2 divisors, whose sum is σ = 212424228. Its totient is φ = 212424226.

The previous prime is 212424203. The next prime is 212424283. The reversal of 212424227 is 722424212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212424227 - 2¹⁰ = 212423203 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 212424196 and 212424205.

It is not a weakly prime, because it can be changed into another prime (212424287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106212113 + 106212114.

It is an arithmetic number, because the mean of its divisors is an integer number (106212114).

Almost surely, 2^212424227 is an apocalyptic number.

212424227 is a deficient number, since it is larger than the sum of its proper divisors (1).

212424227 is an equidigital number, since it uses as much as digits as its factorization.

212424227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3584, while the sum is 26.

The square root of 212424227 is about 14574.7805129271. The cubic root of 212424227 is about 596.6706590594.

Adding to 212424227 its reverse (722424212), we get a palindrome (934848439).

The spelling of 212424227 in words is "two hundred twelve million, four hundred twenty-four thousand, two hundred twenty-seven".