1121242663 has 4 divisors (see below), whose sum is σ = 1169992368. Its totient is φ = 1072492960.

The previous prime is 1121242657. The next prime is 1121242679. The reversal of 1121242663 is 3662421211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1121242663 - 2⁹ = 1121242151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121242643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24374818 + ... + 24374863.

It is an arithmetic number, because the mean of its divisors is an integer number (292498092).

Almost surely, 2^1121242663 is an apocalyptic number.

1121242663 is a deficient number, since it is larger than the sum of its proper divisors (48749705).

1121242663 is an equidigital number, since it uses as much as digits as its factorization.

1121242663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48749704.

The product of its digits is 3456, while the sum is 28.

The square root of 1121242663 is about 33484.9617440427. The cubic root of 1121242663 is about 1038.8827569992.

Adding to 1121242663 its reverse (3662421211), we get a palindrome (4783663874).

The spelling of 1121242663 in words is "one billion, one hundred twenty-one million, two hundred forty-two thousand, six hundred sixty-three".