841436221 has 2 divisors, whose sum is σ = 841436222. Its totient is φ = 841436220.

The previous prime is 841436207. The next prime is 841436231. The reversal of 841436221 is 122634148.

841436221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 779247225 + 62188996 = 27915^2 + 7886^2 .

It is a cyclic number.

It is not a de Polignac number, because 841436221 - 2¹⁹ = 840911933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (841436201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 420718110 + 420718111.

It is an arithmetic number, because the mean of its divisors is an integer number (420718111).

Almost surely, 2^841436221 is an apocalyptic number.

It is an amenable number.

841436221 is a deficient number, since it is larger than the sum of its proper divisors (1).

841436221 is an equidigital number, since it uses as much as digits as its factorization.

841436221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 31.

The square root of 841436221 is about 29007.5200766974. The cubic root of 841436221 is about 944.0762399673.

The spelling of 841436221 in words is "eight hundred forty-one million, four hundred thirty-six thousand, two hundred twenty-one".