11243121005 has 8 divisors (see below), whose sum is σ = 13581095424. Its totient is φ = 8934930000.

The previous prime is 11243120927. The next prime is 11243121011. The reversal of 11243121005 is 50012134211.

11243121005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11243121005 - 2²⁸ = 10974685549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 7445021 + ... + 7446530.

It is an arithmetic number, because the mean of its divisors is an integer number (1697636928).

Almost surely, 2^11243121005 is an apocalyptic number.

It is an amenable number.

11243121005 is a deficient number, since it is larger than the sum of its proper divisors (2337974419).

11243121005 is a wasteful number, since it uses less digits than its factorization.

11243121005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14891707.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 11243121005 its reverse (50012134211), we get a palindrome (61255255216).

The spelling of 11243121005 in words is "eleven billion, two hundred forty-three million, one hundred twenty-one thousand, five".