1123403220443 has 16 divisors (see below), whose sum is σ = 1359629774784. Its totient is φ = 906129884160.

The previous prime is 1123403220419. The next prime is 1123403220461. The reversal of 1123403220443 is 3440223043211.

It is a cyclic number.

It is not a de Polignac number, because 1123403220443 - 2¹⁴ = 1123403204059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123403220343) 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 15 ways as a sum of consecutive naturals, for example, 5018 + ... + 1498943.

It is an arithmetic number, because the mean of its divisors is an integer number (84976860924).

Almost surely, 2^{1123403220443} is an apocalyptic number.

1123403220443 is a deficient number, since it is larger than the sum of its proper divisors (236226554341).

1123403220443 is a wasteful number, since it uses less digits than its factorization.

1123403220443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510262.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 1123403220443 its reverse (3440223043211), we get a palindrome (4563626263654).

The spelling of 1123403220443 in words is "one trillion, one hundred twenty-three billion, four hundred three million, two hundred twenty thousand, four hundred forty-three".