11221220443 has 8 divisors (see below), whose sum is σ = 11779522560. Its totient is φ = 10675188840.

The previous prime is 11221220429. The next prime is 11221220459. The reversal of 11221220443 is 34402212211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11221220443 - 2¹³ = 11221212251 is a prime.

It is a super-2 number, since 2×11221220443² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11221220743) 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 7 ways as a sum of consecutive naturals, for example, 3065755 + ... + 3069412.

It is an arithmetic number, because the mean of its divisors is an integer number (1472440320).

Almost surely, 2^11221220443 is an apocalyptic number.

11221220443 is a deficient number, since it is larger than the sum of its proper divisors (558302117).

11221220443 is an equidigital number, since it uses as much as digits as its factorization.

11221220443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6135257.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 11221220443 its reverse (34402212211), we get a palindrome (45623432654).

The spelling of 11221220443 in words is "eleven billion, two hundred twenty-one million, two hundred twenty thousand, four hundred forty-three".