12821141 has 2 divisors, whose sum is σ = 12821142. Its totient is φ = 12821140.

The previous prime is 12821119. The next prime is 12821153. The reversal of 12821141 is 14112821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6838225 + 5982916 = 2615^2 + 2446^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12821141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12823141) 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, 6410570 + 6410571.

It is an arithmetic number, because the mean of its divisors is an integer number (6410571).

Almost surely, 2^12821141 is an apocalyptic number.

It is an amenable number.

12821141 is a deficient number, since it is larger than the sum of its proper divisors (1).

12821141 is an equidigital number, since it uses as much as digits as its factorization.

12821141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 128, while the sum is 20.

The square root of 12821141 is about 3580.6620896142. The cubic root of 12821141 is about 234.0501329263.

Adding to 12821141 its reverse (14112821), we get a palindrome (26933962).

The spelling of 12821141 in words is "twelve million, eight hundred twenty-one thousand, one hundred forty-one".