1121181 has 8 divisors (see below), whose sum is σ = 1560000. Its totient is φ = 714912.

The previous prime is 1121179. The next prime is 1121189. The reversal of 1121181 is 1811211.

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

It is not a de Polignac number, because 1121181 - 2¹ = 1121179 is a prime.

It is a super-2 number, since 2×1121181² = 2514093669522, which contains 22 as substring.

It is a Curzon number.

1121181 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1121181.

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8056 + ... + 8193.

It is an arithmetic number, because the mean of its divisors is an integer number (195000).

2^1121181 is an apocalyptic number.

It is an amenable number.

1121181 is a deficient number, since it is larger than the sum of its proper divisors (438819).

1121181 is a wasteful number, since it uses less digits than its factorization.

1121181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16275.

The product of its digits is 16, while the sum is 15.

The square root of 1121181 is about 1058.8583474667. The cubic root of 1121181 is about 103.8863712117.

Adding to 1121181 its reverse (1811211), we get a palindrome (2932392).

The spelling of 1121181 in words is "one million, one hundred twenty-one thousand, one hundred eighty-one".