1123221443 has 2 divisors, whose sum is σ = 1123221444. Its totient is φ = 1123221442.

The previous prime is 1123221403. The next prime is 1123221497. The reversal of 1123221443 is 3441223211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1123221443 - 2¹⁰ = 1123220419 is a prime.

It is a super-3 number, since 3×1123221443³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1123221403) 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, 561610721 + 561610722.

It is an arithmetic number, because the mean of its divisors is an integer number (561610722).

Almost surely, 2^1123221443 is an apocalyptic number.

1123221443 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123221443 is an equidigital number, since it uses as much as digits as its factorization.

1123221443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 23.

The square root of 1123221443 is about 33514.4960129195. The cubic root of 1123221443 is about 1039.4935413118.

Adding to 1123221443 its reverse (3441223211), we get a palindrome (4564444654).

The spelling of 1123221443 in words is "one billion, one hundred twenty-three million, two hundred twenty-one thousand, four hundred forty-three".