1113323121 has 24 divisors (see below), whose sum is σ = 1646679840. Its totient is φ = 724622976.

The previous prime is 1113323111. The next prime is 1113323129. The reversal of 1113323121 is 1213233111.

It is not a de Polignac number, because 1113323121 - 2¹⁰ = 1113322097 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1113323094 and 1113323103.

It is not an unprimeable number, because it can be changed into a prime (1113323129) 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 23 ways as a sum of consecutive naturals, for example, 59970 + ... + 76308.

It is an arithmetic number, because the mean of its divisors is an integer number (68611660).

Almost surely, 2^1113323121 is an apocalyptic number.

It is an amenable number.

1113323121 is a deficient number, since it is larger than the sum of its proper divisors (533356719).

1113323121 is a wasteful number, since it uses less digits than its factorization.

1113323121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16525 (or 16522 counting only the distinct ones).

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

The square root of 1113323121 is about 33366.4969842505. The cubic root of 1113323121 is about 1036.4310359486.

Adding to 1113323121 its reverse (1213233111), we get a palindrome (2326556232).

The spelling of 1113323121 in words is "one billion, one hundred thirteen million, three hundred twenty-three thousand, one hundred twenty-one".