9291120001187 has 2 divisors, whose sum is σ = 9291120001188. Its totient is φ = 9291120001186.

The previous prime is 9291120001157. The next prime is 9291120001201. The reversal of 9291120001187 is 7811000211929.

It is a strong prime.

It is an emirp because it is prime and its reverse (7811000211929) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9291120001187 - 2¹⁰ = 9291120000163 is a prime.

It is not a weakly prime, because it can be changed into another prime (9291120001157) 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, 4645560000593 + 4645560000594.

It is an arithmetic number, because the mean of its divisors is an integer number (4645560000594).

Almost surely, 2^{9291120001187} is an apocalyptic number.

9291120001187 is a deficient number, since it is larger than the sum of its proper divisors (1).

9291120001187 is an equidigital number, since it uses as much as digits as its factorization.

9291120001187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 41.

The spelling of 9291120001187 in words is "nine trillion, two hundred ninety-one billion, one hundred twenty million, one thousand, one hundred eighty-seven".