11121430563 has 24 divisors (see below), whose sum is σ = 16195654800. Its totient is φ = 7353872064.

The previous prime is 11121430561. The next prime is 11121430591. The reversal of 11121430563 is 36503412111.

It is a happy number.

It is not a de Polignac number, because 11121430563 - 2¹ = 11121430561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11121430561) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 630873 + ... + 648261.

It is an arithmetic number, because the mean of its divisors is an integer number (674818950).

Almost surely, 2^11121430563 is an apocalyptic number.

11121430563 is a deficient number, since it is larger than the sum of its proper divisors (5074224237).

11121430563 is a wasteful number, since it uses less digits than its factorization.

11121430563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17971 (or 17968 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

Adding to 11121430563 its reverse (36503412111), we get a palindrome (47624842674).

The spelling of 11121430563 in words is "eleven billion, one hundred twenty-one million, four hundred thirty thousand, five hundred sixty-three".