1321113224 has 16 divisors (see below), whose sum is σ = 2529792000. Its totient is φ = 646502032.

The previous prime is 1321113223. The next prime is 1321113247. The reversal of 1321113224 is 4223111231.

It is a junction number, because it is equal to n+sod(n) for n = 1321113196 and 1321113205.

It is not an unprimeable number, because it can be changed into a prime (1321113223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1756424 + ... + 1757175.

It is an arithmetic number, because the mean of its divisors is an integer number (158112000).

Almost surely, 2^1321113224 is an apocalyptic number.

It is an amenable number.

1321113224 is a deficient number, since it is larger than the sum of its proper divisors (1208678776).

1321113224 is a wasteful number, since it uses less digits than its factorization.

1321113224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3513652 (or 3513648 counting only the distinct ones).

The product of its digits is 288, while the sum is 20.

The square root of 1321113224 is about 36347.1212615250. The cubic root of 1321113224 is about 1097.2695984988.

Adding to 1321113224 its reverse (4223111231), we get a palindrome (5544224455).

The spelling of 1321113224 in words is "one billion, three hundred twenty-one million, one hundred thirteen thousand, two hundred twenty-four".