12224081 has 2 divisors, whose sum is σ = 12224082. Its totient is φ = 12224080.

The previous prime is 12224059. The next prime is 12224101. The reversal of 12224081 is 18042221.

It is a happy number.

It is an a-pointer prime, because the next prime (12224101) can be obtained adding 12224081 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11669056 + 555025 = 3416^2 + 745^2 .

It is an emirp because it is prime and its reverse (18042221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12224081 - 2¹⁴ = 12207697 is a prime.

It is a super-2 number, since 2×12224081² = 298856312589122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a nialpdrome in base 16.

It is not a weakly prime, because it can be changed into another prime (12224021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6112040 + 6112041.

It is an arithmetic number, because the mean of its divisors is an integer number (6112041).

Almost surely, 2^12224081 is an apocalyptic number.

It is an amenable number.

12224081 is a deficient number, since it is larger than the sum of its proper divisors (1).

12224081 is an equidigital number, since it uses as much as digits as its factorization.

12224081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 12224081 is about 3496.2953250548. The cubic root of 12224081 is about 230.3591176277.

The spelling of 12224081 in words is "twelve million, two hundred twenty-four thousand, eighty-one".