212447 has 2 divisors, whose sum is σ = 212448. Its totient is φ = 212446.

The previous prime is 212437. The next prime is 212453. The reversal of 212447 is 744212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212447 - 2⁶ = 212383 is a prime.

It is a Chen prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106223 + 106224.

It is an arithmetic number, because the mean of its divisors is an integer number (106224).

2²¹²⁴⁴⁷ is an apocalyptic number.

212447 is a deficient number, since it is larger than the sum of its proper divisors (1).

212447 is an equidigital number, since it uses as much as digits as its factorization.

212447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 448, while the sum is 20.

The square root of 212447 is about 460.9197327084. The cubic root of 212447 is about 59.6691980380.

Adding to 212447 its reverse (744212), we get a palindrome (956659).

The spelling of 212447 in words is "two hundred twelve thousand, four hundred forty-seven", and thus it is an iban number.