1123443013221 has 24 divisors (see below), whose sum is σ = 1679408640000. Its totient is φ = 722833897632.

The previous prime is 1123443013211. The next prime is 1123443013237. The reversal of 1123443013221 is 1223103443211.

1123443013221 is a `hidden beast` number, since 1 + 1 + 2 + 3 + 4 + 430 + 1 + 3 + 221 = 666.

It is not a de Polignac number, because 1123443013221 - 2⁶ = 1123443013157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123443013211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 270981 + ... + 1523258.

It is an arithmetic number, because the mean of its divisors is an integer number (69975360000).

Almost surely, 2^{1123443013221} is an apocalyptic number.

It is an amenable number.

1123443013221 is a deficient number, since it is larger than the sum of its proper divisors (555965626779).

1123443013221 is a wasteful number, since it uses less digits than its factorization.

1123443013221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1796673 (or 1796670 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 1123443013221 its reverse (1223103443211), we get a palindrome (2346546456432).

The spelling of 1123443013221 in words is "one trillion, one hundred twenty-three billion, four hundred forty-three million, thirteen thousand, two hundred twenty-one".