11211340043 has 4 divisors (see below), whose sum is σ = 11264474568. Its totient is φ = 11158205520.

The previous prime is 11211340039. The next prime is 11211340069. The reversal of 11211340043 is 34004311211.

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 11211340043 - 2² = 11211340039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11211339997 and 11211340024.

It is not an unprimeable number, because it can be changed into a prime (11211343043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26566946 + ... + 26567367.

It is an arithmetic number, because the mean of its divisors is an integer number (2816118642).

Almost surely, 2^11211340043 is an apocalyptic number.

11211340043 is a deficient number, since it is larger than the sum of its proper divisors (53134525).

11211340043 is an equidigital number, since it uses as much as digits as its factorization.

11211340043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53134524.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 11211340043 its reverse (34004311211), we get a palindrome (45215651254).

The spelling of 11211340043 in words is "eleven billion, two hundred eleven million, three hundred forty thousand, forty-three".