12213073 has 2 divisors, whose sum is σ = 12213074. Its totient is φ = 12213072.

The previous prime is 12213053. The next prime is 12213077. The reversal of 12213073 is 37031221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10316944 + 1896129 = 3212^2 + 1377^2 .

It is a cyclic number.

It is not a de Polignac number, because 12213073 - 2⁹ = 12212561 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12213073.

It is not a weakly prime, because it can be changed into another prime (12213077) 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, 6106536 + 6106537.

It is an arithmetic number, because the mean of its divisors is an integer number (6106537).

Almost surely, 2^12213073 is an apocalyptic number.

It is an amenable number.

12213073 is a deficient number, since it is larger than the sum of its proper divisors (1).

12213073 is an equidigital number, since it uses as much as digits as its factorization.

12213073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 12213073 is about 3494.7207327625. The cubic root of 12213073 is about 230.2899493817.

Adding to 12213073 its reverse (37031221), we get a palindrome (49244294).

The spelling of 12213073 in words is "twelve million, two hundred thirteen thousand, seventy-three".