841282427221 has 2 divisors, whose sum is σ = 841282427222. Its totient is φ = 841282427220.

The previous prime is 841282427213. The next prime is 841282427233. The reversal of 841282427221 is 122724282148.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 836284644196 + 4997783025 = 914486^2 + 70695^2 .

It is a cyclic number.

It is not a de Polignac number, because 841282427221 - 2³ = 841282427213 is a prime.

It is a super-2 number, since 2×841282427221² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (841282427281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 420641213610 + 420641213611.

It is an arithmetic number, because the mean of its divisors is an integer number (420641213611).

Almost surely, 2^841282427221 is an apocalyptic number.

It is an amenable number.

841282427221 is a deficient number, since it is larger than the sum of its proper divisors (1).

841282427221 is an equidigital number, since it uses as much as digits as its factorization.

841282427221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 229376, while the sum is 43.

The spelling of 841282427221 in words is "eight hundred forty-one billion, two hundred eighty-two million, four hundred twenty-seven thousand, two hundred twenty-one".