7221508117 has 2 divisors, whose sum is σ = 7221508118. Its totient is φ = 7221508116.

The previous prime is 7221508103. The next prime is 7221508169. The reversal of 7221508117 is 7118051227.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5481033156 + 1740474961 = 74034^2 + 41719^2 .

It is a cyclic number.

It is not a de Polignac number, because 7221508117 - 2⁷ = 7221507989 is a prime.

It is a super-3 number, since 3×7221508117³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7221208117) 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, 3610754058 + 3610754059.

It is an arithmetic number, because the mean of its divisors is an integer number (3610754059).

Almost surely, 2^7221508117 is an apocalyptic number.

It is an amenable number.

7221508117 is a deficient number, since it is larger than the sum of its proper divisors (1).

7221508117 is an equidigital number, since it uses as much as digits as its factorization.

7221508117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7840, while the sum is 34.

The square root of 7221508117 is about 84979.4570293315. The cubic root of 7221508117 is about 1932.8996224863.

The spelling of 7221508117 in words is "seven billion, two hundred twenty-one million, five hundred eight thousand, one hundred seventeen".