9291120001217 has 2 divisors, whose sum is σ = 9291120001218. Its totient is φ = 9291120001216.

The previous prime is 9291120001201. The next prime is 9291120001259. The reversal of 9291120001217 is 7121000211929.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6488589547441 + 2802530453776 = 2547271^2 + 1674076^2 .

It is a cyclic number.

It is not a de Polignac number, because 9291120001217 - 2⁴ = 9291120001201 is a prime.

It is not a weakly prime, because it can be changed into another prime (9291120001517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4645560000608 + 4645560000609.

It is an arithmetic number, because the mean of its divisors is an integer number (4645560000609).

Almost surely, 2^{9291120001217} is an apocalyptic number.

It is an amenable number.

9291120001217 is a deficient number, since it is larger than the sum of its proper divisors (1).

9291120001217 is an equidigital number, since it uses as much as digits as its factorization.

9291120001217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 35.

The spelling of 9291120001217 in words is "nine trillion, two hundred ninety-one billion, one hundred twenty million, one thousand, two hundred seventeen".