1113221331 has 24 divisors (see below), whose sum is σ = 1653259920. Its totient is φ = 721296576.

The previous prime is 1113221309. The next prime is 1113221371. The reversal of 1113221331 is 1331223111.

1113221331 is a `hidden beast` number, since 1 + 11 + 322 + 1 + 331 = 666.

It is not a de Polignac number, because 1113221331 - 2⁷ = 1113221203 is a prime.

It is a super-2 number, since 2×1113221331² = 2478523463586823122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1113221371) 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, 554776 + ... + 556778.

It is an arithmetic number, because the mean of its divisors is an integer number (68885830).

Almost surely, 2^1113221331 is an apocalyptic number.

1113221331 is a deficient number, since it is larger than the sum of its proper divisors (540038589).

1113221331 is a wasteful number, since it uses less digits than its factorization.

1113221331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3715 (or 3712 counting only the distinct ones).

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

The square root of 1113221331 is about 33364.9716169518. The cubic root of 1113221331 is about 1036.3994483743.

Adding to 1113221331 its reverse (1331223111), we get a palindrome (2444444442).

The spelling of 1113221331 in words is "one billion, one hundred thirteen million, two hundred twenty-one thousand, three hundred thirty-one".