1121188 has 6 divisors (see below), whose sum is σ = 1962086. Its totient is φ = 560592.

The previous prime is 1121179. The next prime is 1121189. The reversal of 1121188 is 8811211.

It can be written as a sum of positive squares in only one way, i.e., 831744 + 289444 = 912^2 + 538^2 .

It is not an unprimeable number, because it can be changed into a prime (1121189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140145 + ... + 140152.

2^1121188 is an apocalyptic number.

It is an amenable number.

1121188 is a deficient number, since it is larger than the sum of its proper divisors (840898).

1121188 is a wasteful number, since it uses less digits than its factorization.

1121188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280301 (or 280299 counting only the distinct ones).

The product of its digits is 128, while the sum is 22.

The square root of 1121188 is about 1058.8616529084. The cubic root of 1121188 is about 103.8865874133.

Adding to 1121188 its reverse (8811211), we get a palindrome (9932399).

The spelling of 1121188 in words is "one million, one hundred twenty-one thousand, one hundred eighty-eight".