11221321043 has 4 divisors (see below), whose sum is σ = 11226633768. Its totient is φ = 11216008320.

The previous prime is 11221320989. The next prime is 11221321073. The reversal of 11221321043 is 34012312211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34012312211 = 2543 ⋅13374877.

It is a cyclic number.

It is not a de Polignac number, because 11221321043 - 2¹⁴ = 11221304659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11221321073) 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, 2653193 + ... + 2657418.

It is an arithmetic number, because the mean of its divisors is an integer number (2806658442).

Almost surely, 2^11221321043 is an apocalyptic number.

11221321043 is a deficient number, since it is larger than the sum of its proper divisors (5312725).

11221321043 is an equidigital number, since it uses as much as digits as its factorization.

11221321043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5312724.

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

Adding to 11221321043 its reverse (34012312211), we get a palindrome (45233633254).

The spelling of 11221321043 in words is "eleven billion, two hundred twenty-one million, three hundred twenty-one thousand, forty-three".