11321321043 has 16 divisors (see below), whose sum is σ = 15423553440. Its totient is φ = 7384126464.

The previous prime is 11321321009. The next prime is 11321321059. The reversal of 11321321043 is 34012312311.

11321321043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11321321043 - 2⁶ = 11321320979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11321321093) 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 in 15 ways as a sum of consecutive naturals, for example, 44728 + ... + 156981.

It is an arithmetic number, because the mean of its divisors is an integer number (963972090).

Almost surely, 2^11321321043 is an apocalyptic number.

11321321043 is a deficient number, since it is larger than the sum of its proper divisors (4102232397).

11321321043 is a wasteful number, since it uses less digits than its factorization.

11321321043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202118.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 11321321043 its reverse (34012312311), we get a palindrome (45333633354).

The spelling of 11321321043 in words is "eleven billion, three hundred twenty-one million, three hundred twenty-one thousand, forty-three".