111120122102009 has 2 divisors, whose sum is σ = 111120122102010. Its totient is φ = 111120122102008.

The previous prime is 111120122101921. The next prime is 111120122102057. The reversal of 111120122102009 is 900201221021111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67074003376384 + 44046118725625 = 8189872^2 + 6636725^2 .

It is a cyclic number.

It is not a de Polignac number, because 111120122102009 - 2²⁸ = 111119853666553 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (111120122102309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55560061051004 + 55560061051005.

It is an arithmetic number, because the mean of its divisors is an integer number (55560061051005).

Almost surely, 2^{111120122102009} is an apocalyptic number.

It is an amenable number.

111120122102009 is a deficient number, since it is larger than the sum of its proper divisors (1).

111120122102009 is an equidigital number, since it uses as much as digits as its factorization.

111120122102009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 111120122102009 in words is "one hundred eleven trillion, one hundred twenty billion, one hundred twenty-two million, one hundred two thousand, nine".