1111123199 has 2 divisors, whose sum is σ = 1111123200.
Its totient is φ = 1111123198.
The previous prime is 1111123183. The next prime is 1111123201. The reversal of 1111123199 is 9913211111.
It is a strong prime.
It is an emirp because it is prime and its reverse (9913211111) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 1111123199 - 24 = 1111123183 is a prime.
Together with 1111123201, it forms a pair of twin primes.
It is a Chen prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (1111123499) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555561599 + 555561600.
It is an arithmetic number, because the mean of its divisors is an integer number (555561600).
Almost surely, 21111123199 is an apocalyptic number.
1111123199 is a deficient number, since it is larger than the sum of its proper divisors (1).
1111123199 is an equidigital number, since it uses as much as digits as its factorization.
1111123199 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 486, while the sum is 29.
The square root of 1111123199 is about 33333.5146511735.
The cubic root of 1111123199 is about 1035.7479246258.
The spelling of 1111123199 in words is "one billion, one hundred eleven million, one hundred twenty-three thousand, one hundred ninety-nine".