8238192069221 has 2 divisors, whose sum is σ = 8238192069222. Its totient is φ = 8238192069220.

The previous prime is 8238192069209. The next prime is 8238192069229. The reversal of 8238192069221 is 1229602918328.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7782147122500 + 456044946721 = 2789650^2 + 675311^2 .

It is a cyclic number.

It is not a de Polignac number, because 8238192069221 - 2¹⁴ = 8238192052837 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8238192069229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4119096034610 + 4119096034611.

It is an arithmetic number, because the mean of its divisors is an integer number (4119096034611).

Almost surely, 2^{8238192069221} is an apocalyptic number.

It is an amenable number.

8238192069221 is a deficient number, since it is larger than the sum of its proper divisors (1).

8238192069221 is an equidigital number, since it uses as much as digits as its factorization.

8238192069221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1492992, while the sum is 53.

The spelling of 8238192069221 in words is "eight trillion, two hundred thirty-eight billion, one hundred ninety-two million, sixty-nine thousand, two hundred twenty-one".