1113221231 has 8 divisors (see below), whose sum is σ = 1152519600. Its totient is φ = 1073983680.

The previous prime is 1113221209. The next prime is 1113221233. The reversal of 1113221231 is 1321223111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1113221231 - 2¹⁴ = 1113204847 is a prime.

It is a super-2 number, since 2×1113221231² = 2478523018298310722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113221233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23780 + ... + 52838.

It is an arithmetic number, because the mean of its divisors is an integer number (144064950).

Almost surely, 2^1113221231 is an apocalyptic number.

1113221231 is a deficient number, since it is larger than the sum of its proper divisors (39298369).

1113221231 is a wasteful number, since it uses less digits than its factorization.

1113221231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30409.

The product of its digits is 72, while the sum is 17.

The square root of 1113221231 is about 33364.9701183742. The cubic root of 1113221231 is about 1036.3994173412.

Adding to 1113221231 its reverse (1321223111), we get a palindrome (2434444342).

The spelling of 1113221231 in words is "one billion, one hundred thirteen million, two hundred twenty-one thousand, two hundred thirty-one".