12241661 has 2 divisors, whose sum is σ = 12241662. Its totient is φ = 12241660.

The previous prime is 12241651. The next prime is 12241673. The reversal of 12241661 is 16614221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8265625 + 3976036 = 2875^2 + 1994^2 .

It is a cyclic number.

It is not a de Polignac number, because 12241661 - 2⁶ = 12241597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12241651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6120830 + 6120831.

It is an arithmetic number, because the mean of its divisors is an integer number (6120831).

Almost surely, 2^12241661 is an apocalyptic number.

It is an amenable number.

12241661 is a deficient number, since it is larger than the sum of its proper divisors (1).

12241661 is an equidigital number, since it uses as much as digits as its factorization.

12241661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 23.

The square root of 12241661 is about 3498.8085114793. The cubic root of 12241661 is about 230.4694946635.

Adding to 12241661 its reverse (16614221), we get a palindrome (28855882).

The spelling of 12241661 in words is "twelve million, two hundred forty-one thousand, six hundred sixty-one".