210011121000997 has 2 divisors, whose sum is σ = 210011121000998. Its totient is φ = 210011121000996.

The previous prime is 210011121000871. The next prime is 210011121001229. The reversal of 210011121000997 is 799000121110012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201608363640996 + 8402757360001 = 14198886^2 + 2898751^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210011121000997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210011121000697) 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, 105005560500498 + 105005560500499.

It is an arithmetic number, because the mean of its divisors is an integer number (105005560500499).

Almost surely, 2^{210011121000997} is an apocalyptic number.

It is an amenable number.

210011121000997 is a deficient number, since it is larger than the sum of its proper divisors (1).

210011121000997 is an equidigital number, since it uses as much as digits as its factorization.

210011121000997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 34.

The spelling of 210011121000997 in words is "two hundred ten trillion, eleven billion, one hundred twenty-one million, nine hundred ninety-seven", and thus it is an aban number.