11042181 has 12 divisors (see below), whose sum is σ = 16012620. Its totient is φ = 7332480.

The previous prime is 11042153. The next prime is 11042183. The reversal of 11042181 is 18124011.

11042181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1988100 + 9054081 = 1410^2 + 3009^2 .

It is not a de Polignac number, because 11042181 - 2⁵ = 11042149 is a prime.

It is a super-2 number, since 2×11042181² = 243859522473522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11042183) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 141 + ... + 4701.

It is an arithmetic number, because the mean of its divisors is an integer number (1334385).

Almost surely, 2^11042181 is an apocalyptic number.

It is an amenable number.

11042181 is a deficient number, since it is larger than the sum of its proper divisors (4970439).

11042181 is a wasteful number, since it uses less digits than its factorization.

11042181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4836 (or 4833 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

The square root of 11042181 is about 3322.9777308914. The cubic root of 11042181 is about 222.6819183003.

Adding to 11042181 its reverse (18124011), we get a palindrome (29166192).

The spelling of 11042181 in words is "eleven million, forty-two thousand, one hundred eighty-one".