1121133449 has 2 divisors, whose sum is σ = 1121133450. Its totient is φ = 1121133448.

The previous prime is 1121133439. The next prime is 1121133451. The reversal of 1121133449 is 9443311211.

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., 979690000 + 141443449 = 31300^2 + 11893^2 .

It is an emirp because it is prime and its reverse (9443311211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1121133449 - 2²⁰ = 1120084873 is a prime.

It is a Sophie Germain prime.

Together with 1121133451, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1121133439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560566724 + 560566725.

It is an arithmetic number, because the mean of its divisors is an integer number (560566725).

Almost surely, 2^1121133449 is an apocalyptic number.

It is an amenable number.

1121133449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121133449 is an equidigital number, since it uses as much as digits as its factorization.

1121133449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 29.

The square root of 1121133449 is about 33483.3309125601. The cubic root of 1121133449 is about 1038.8490253105.

The spelling of 1121133449 in words is "one billion, one hundred twenty-one million, one hundred thirty-three thousand, four hundred forty-nine".