1132111221 has 16 divisors (see below), whose sum is σ = 1576713600. Its totient is φ = 721191680.

The previous prime is 1132111171. The next prime is 1132111223. The reversal of 1132111221 is 1221112311.

It is not a de Polignac number, because 1132111221 - 2⁶ = 1132111157 is a prime.

It is a super-2 number, since 2×1132111221² = 2563351633428221682, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1132111221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1132111223) 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 15 ways as a sum of consecutive naturals, for example, 64561 + ... + 80201.

It is an arithmetic number, because the mean of its divisors is an integer number (98544600).

Almost surely, 2^1132111221 is an apocalyptic number.

It is an amenable number.

1132111221 is a deficient number, since it is larger than the sum of its proper divisors (444602379).

1132111221 is a wasteful number, since it uses less digits than its factorization.

1132111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16716.

The product of its digits is 24, while the sum is 15.

The square root of 1132111221 is about 33646.8604924739. The cubic root of 1132111221 is about 1042.2287082260.

Adding to 1132111221 its reverse (1221112311), we get a palindrome (2353223532).

The spelling of 1132111221 in words is "one billion, one hundred thirty-two million, one hundred eleven thousand, two hundred twenty-one".