8222754721 has 2 divisors, whose sum is σ = 8222754722. Its totient is φ = 8222754720.

The previous prime is 8222754671. The next prime is 8222754739. The reversal of 8222754721 is 1274572228.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5209952400 + 3012802321 = 72180^2 + 54889^2 .

It is a cyclic number.

It is not a de Polignac number, because 8222754721 - 2¹³ = 8222746529 is a prime.

It is a super-2 number, since 2×8222754721² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8222754781) 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 as a sum of consecutive naturals, namely, 4111377360 + 4111377361.

It is an arithmetic number, because the mean of its divisors is an integer number (4111377361).

Almost surely, 2^8222754721 is an apocalyptic number.

It is an amenable number.

8222754721 is a deficient number, since it is larger than the sum of its proper divisors (1).

8222754721 is an equidigital number, since it uses as much as digits as its factorization.

8222754721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 125440, while the sum is 40.

The square root of 8222754721 is about 90679.4062673549. The cubic root of 8222754721 is about 2018.3932196014.

The spelling of 8222754721 in words is "eight billion, two hundred twenty-two million, seven hundred fifty-four thousand, seven hundred twenty-one".