11124111409 has 2 divisors, whose sum is σ = 11124111410. Its totient is φ = 11124111408.

The previous prime is 11124111407. The next prime is 11124111461. The reversal of 11124111409 is 90411142111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11117593600 + 6517809 = 105440^2 + 2553^2 .

It is an emirp because it is prime and its reverse (90411142111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11124111409 - 2¹ = 11124111407 is a prime.

Together with 11124111407, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11124111407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5562055704 + 5562055705.

It is an arithmetic number, because the mean of its divisors is an integer number (5562055705).

Almost surely, 2^11124111409 is an apocalyptic number.

It is an amenable number.

11124111409 is a deficient number, since it is larger than the sum of its proper divisors (1).

11124111409 is an equidigital number, since it uses as much as digits as its factorization.

11124111409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 25.

The spelling of 11124111409 in words is "eleven billion, one hundred twenty-four million, one hundred eleven thousand, four hundred nine".