1113321321 has 128 divisors (see below), whose sum is σ = 2091417600. Its totient is φ = 571069440.

The previous prime is 1113321317. The next prime is 1113321331. The reversal of 1113321321 is 1231233111.

1113321321 is a `hidden beast` number, since 1 + 11 + 332 + 1 + 321 = 666.

It is not a de Polignac number, because 1113321321 - 2² = 1113321317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1113321294 and 1113321303.

It is not an unprimeable number, because it can be changed into a prime (1113321311) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 8126365 + ... + 8126501.

It is an arithmetic number, because the mean of its divisors is an integer number (16339200).

Almost surely, 2^1113321321 is an apocalyptic number.

It is an amenable number.

1113321321 is a deficient number, since it is larger than the sum of its proper divisors (978096279).

1113321321 is a wasteful number, since it uses less digits than its factorization.

1113321321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276 (or 270 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 1113321321 is about 33366.4700110755. The cubic root of 1113321321 is about 1036.4304773875.

Adding to 1113321321 its reverse (1231233111), we get a palindrome (2344554432).

The spelling of 1113321321 in words is "one billion, one hundred thirteen million, three hundred twenty-one thousand, three hundred twenty-one".