9900111111097 has 2 divisors, whose sum is σ = 9900111111098. Its totient is φ = 9900111111096.

The previous prime is 9900111111067. The next prime is 9900111111157. The reversal of 9900111111097 is 7901111110099.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5723405508496 + 4176705602601 = 2392364^2 + 2043699^2 .

It is an emirp because it is prime and its reverse (7901111110099) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9900111111097 - 2²⁷ = 9899976893369 is a prime.

It is not a weakly prime, because it can be changed into another prime (9900111111017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4950055555548 + 4950055555549.

It is an arithmetic number, because the mean of its divisors is an integer number (4950055555549).

Almost surely, 2^{9900111111097} is an apocalyptic number.

It is an amenable number.

9900111111097 is a deficient number, since it is larger than the sum of its proper divisors (1).

9900111111097 is an equidigital number, since it uses as much as digits as its factorization.

9900111111097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5103, while the sum is 40.

The spelling of 9900111111097 in words is "nine trillion, nine hundred billion, one hundred eleven million, one hundred eleven thousand, ninety-seven".