11123145 has 48 divisors (see below), whose sum is σ = 21969792. Its totient is φ = 5153280.

The previous prime is 11123143. The next prime is 11123171. The reversal of 11123145 is 54132111.

It is not a de Polignac number, because 11123145 - 2¹ = 11123143 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11123143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10897 + ... + 11873.

It is an arithmetic number, because the mean of its divisors is an integer number (457704).

Almost surely, 2^11123145 is an apocalyptic number.

11123145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11123145 is a deficient number, since it is larger than the sum of its proper divisors (10846647).

11123145 is a wasteful number, since it uses less digits than its factorization.

11123145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022 (or 1019 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 11123145 is about 3335.1379281823. The cubic root of 11123145 is about 223.2248464459.

Adding to 11123145 its reverse (54132111), we get a palindrome (65255256).

The spelling of 11123145 in words is "eleven million, one hundred twenty-three thousand, one hundred forty-five".