10111123222909 has 2 divisors, whose sum is σ = 10111123222910. Its totient is φ = 10111123222908.

The previous prime is 10111123222897. The next prime is 10111123222943. The reversal of 10111123222909 is 90922232111101.

It is a happy number.

It is an a-pointer prime, because the next prime (10111123222943) can be obtained adding 10111123222909 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9331937451684 + 779185771225 = 3054822^2 + 882715^2 .

It is a cyclic number.

It is not a de Polignac number, because 10111123222909 - 2⁹ = 10111123222397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10111123222999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5055561611454 + 5055561611455.

It is an arithmetic number, because the mean of its divisors is an integer number (5055561611455).

Almost surely, 2^{10111123222909} is an apocalyptic number.

It is an amenable number.

10111123222909 is a deficient number, since it is larger than the sum of its proper divisors (1).

10111123222909 is an equidigital number, since it uses as much as digits as its factorization.

10111123222909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 34.

The spelling of 10111123222909 in words is "ten trillion, one hundred eleven billion, one hundred twenty-three million, two hundred twenty-two thousand, nine hundred nine".