9217513972229 has 2 divisors, whose sum is σ = 9217513972230. Its totient is φ = 9217513972228.

The previous prime is 9217513972217. The next prime is 9217513972309. The reversal of 9217513972229 is 9222793157129.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5979320920225 + 3238193052004 = 2445265^2 + 1799498^2 .

It is a cyclic number.

It is not a de Polignac number, because 9217513972229 - 2⁸ = 9217513971973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9217513972829) 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, 4608756986114 + 4608756986115.

It is an arithmetic number, because the mean of its divisors is an integer number (4608756986115).

Almost surely, 2^{9217513972229} is an apocalyptic number.

It is an amenable number.

9217513972229 is a deficient number, since it is larger than the sum of its proper divisors (1).

9217513972229 is an equidigital number, since it uses as much as digits as its factorization.

9217513972229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8573040, while the sum is 59.

The spelling of 9217513972229 in words is "nine trillion, two hundred seventeen billion, five hundred thirteen million, nine hundred seventy-two thousand, two hundred twenty-nine".