7191221159 has 2 divisors, whose sum is σ = 7191221160. Its totient is φ = 7191221158.

The previous prime is 7191221129. The next prime is 7191221171. The reversal of 7191221159 is 9511221917.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7191221159 - 2²⁴ = 7174443943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7191221129) 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, 3595610579 + 3595610580.

It is an arithmetic number, because the mean of its divisors is an integer number (3595610580).

Almost surely, 2^7191221159 is an apocalyptic number.

7191221159 is a deficient number, since it is larger than the sum of its proper divisors (1).

7191221159 is an equidigital number, since it uses as much as digits as its factorization.

7191221159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11340, while the sum is 38.

The square root of 7191221159 is about 84801.0681477539. The cubic root of 7191221159 is about 1930.1936465295.

The spelling of 7191221159 in words is "seven billion, one hundred ninety-one million, two hundred twenty-one thousand, one hundred fifty-nine".