11001000999997 has 2 divisors, whose sum is σ = 11001000999998. Its totient is φ = 11001000999996.

The previous prime is 11001000999991. The next prime is 11001001000007. The reversal of 11001000999997 is 79999900010011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10916191329156 + 84809670841 = 3303966^2 + 291221^2 .

It is a cyclic number.

It is not a de Polignac number, because 11001000999997 - 2¹¹ = 11001000997949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11001000999991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500500499998 + 5500500499999.

It is an arithmetic number, because the mean of its divisors is an integer number (5500500499999).

Almost surely, 2^{11001000999997} is an apocalyptic number.

It is an amenable number.

11001000999997 is a deficient number, since it is larger than the sum of its proper divisors (1).

11001000999997 is an equidigital number, since it uses as much as digits as its factorization.

11001000999997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 413343, while the sum is 55.

The spelling of 11001000999997 in words is "eleven trillion, one billion, nine hundred ninety-nine thousand, nine hundred ninety-seven".