12224981 has 2 divisors, whose sum is σ = 12224982. Its totient is φ = 12224980.

The previous prime is 12224969. The next prime is 12225041. The reversal of 12224981 is 18942221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6584356 + 5640625 = 2566^2 + 2375^2 .

It is a cyclic number.

It is not a de Polignac number, because 12224981 - 2⁶ = 12224917 is a prime.

It is a super-2 number, since 2×12224981² = 298900320900722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12224081) 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, 6112490 + 6112491.

It is an arithmetic number, because the mean of its divisors is an integer number (6112491).

Almost surely, 2^12224981 is an apocalyptic number.

It is an amenable number.

12224981 is a deficient number, since it is larger than the sum of its proper divisors (1).

12224981 is an equidigital number, since it uses as much as digits as its factorization.

12224981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 29.

The square root of 12224981 is about 3496.4240303487. The cubic root of 12224981 is about 230.3647708984.

The spelling of 12224981 in words is "twelve million, two hundred twenty-four thousand, nine hundred eighty-one".