212026247 has 2 divisors, whose sum is σ = 212026248. Its totient is φ = 212026246.

The previous prime is 212026231. The next prime is 212026271. The reversal of 212026247 is 742620212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212026247 - 2⁴ = 212026231 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 (212026547) 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, 106013123 + 106013124.

It is an arithmetic number, because the mean of its divisors is an integer number (106013124).

Almost surely, 2^212026247 is an apocalyptic number.

212026247 is a deficient number, since it is larger than the sum of its proper divisors (1).

212026247 is an equidigital number, since it uses as much as digits as its factorization.

212026247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 212026247 is about 14561.1210763457. The cubic root of 212026247 is about 596.2978022787.

Adding to 212026247 its reverse (742620212), we get a palindrome (954646459).

The spelling of 212026247 in words is "two hundred twelve million, twenty-six thousand, two hundred forty-seven".