1121244413 has 2 divisors, whose sum is σ = 1121244414. Its totient is φ = 1121244412.

The previous prime is 1121244403. The next prime is 1121244431. The reversal of 1121244413 is 3144421211.

Together with next prime (1121244431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1116762724 + 4481689 = 33418^2 + 2117^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121244413 - 2⁶ = 1121244349 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121244403) 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, 560622206 + 560622207.

It is an arithmetic number, because the mean of its divisors is an integer number (560622207).

Almost surely, 2^1121244413 is an apocalyptic number.

It is an amenable number.

1121244413 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121244413 is an equidigital number, since it uses as much as digits as its factorization.

1121244413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 768, while the sum is 23.

The square root of 1121244413 is about 33484.9878751658. The cubic root of 1121244413 is about 1038.8832974840.

Adding to 1121244413 its reverse (3144421211), we get a palindrome (4265665624).

The spelling of 1121244413 in words is "one billion, one hundred twenty-one million, two hundred forty-four thousand, four hundred thirteen".