8221261093 has 8 divisors (see below), whose sum is σ = 8308757912. Its totient is φ = 8133820416.

The previous prime is 8221261091. The next prime is 8221261109. The reversal of 8221261093 is 3901621228.

8221261093 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 110817729 + 8110443364 = 10527^2 + 90058^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8221261093 - 2¹ = 8221261091 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8221261091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 323071 + ... + 347587.

It is an arithmetic number, because the mean of its divisors is an integer number (1038594739).

Almost surely, 2^8221261093 is an apocalyptic number.

It is an amenable number.

8221261093 is a deficient number, since it is larger than the sum of its proper divisors (87496819).

8221261093 is a wasteful number, since it uses less digits than its factorization.

8221261093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28071.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 8221261093 is about 90671.1701314150. The cubic root of 8221261093 is about 2018.2710013876.

The spelling of 8221261093 in words is "eight billion, two hundred twenty-one million, two hundred sixty-one thousand, ninety-three".