11221637443 has 4 divisors (see below), whose sum is σ = 11812249960. Its totient is φ = 10631024928.

The previous prime is 11221637431. The next prime is 11221637489. The reversal of 11221637443 is 34473612211.

11221637443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11221637443 - 2⁵ = 11221637411 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11221637399 and 11221637408.

It is not an unprimeable number, because it can be changed into a prime (11221634443) 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 3 ways as a sum of consecutive naturals, for example, 295306230 + ... + 295306267.

It is an arithmetic number, because the mean of its divisors is an integer number (2953062490).

Almost surely, 2^11221637443 is an apocalyptic number.

11221637443 is a deficient number, since it is larger than the sum of its proper divisors (590612517).

11221637443 is an equidigital number, since it uses as much as digits as its factorization.

11221637443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590612516.

The product of its digits is 24192, while the sum is 34.

The spelling of 11221637443 in words is "eleven billion, two hundred twenty-one million, six hundred thirty-seven thousand, four hundred forty-three".