11221055543 has 2 divisors, whose sum is σ = 11221055544. Its totient is φ = 11221055542.

The previous prime is 11221055533. The next prime is 11221055557. The reversal of 11221055543 is 34555012211.

It is a weak prime.

It is an emirp because it is prime and its reverse (34555012211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11221055543 - 2¹⁰ = 11221054519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11221055533) 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 as a sum of consecutive naturals, namely, 5610527771 + 5610527772.

It is an arithmetic number, because the mean of its divisors is an integer number (5610527772).

Almost surely, 2^11221055543 is an apocalyptic number.

11221055543 is a deficient number, since it is larger than the sum of its proper divisors (1).

11221055543 is an equidigital number, since it uses as much as digits as its factorization.

11221055543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6000, while the sum is 29.

Adding to 11221055543 its reverse (34555012211), we get a palindrome (45776067754).

The spelling of 11221055543 in words is "eleven billion, two hundred twenty-one million, fifty-five thousand, five hundred forty-three".