11123118 has 12 divisors (see below), whose sum is σ = 24100128. Its totient is φ = 3707700.

The previous prime is 11123107. The next prime is 11123129. The reversal of 11123118 is 81132111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11123107) and next prime (11123129).

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 617951 = 11123118 / (1 + 1 + 1 + 2 + 3 + 1 + 1 + 8).

It is a self number, because there is not a number n which added to its sum of digits gives 11123118.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 308958 + ... + 308993.

It is an arithmetic number, because the mean of its divisors is an integer number (2008344).

Almost surely, 2^11123118 is an apocalyptic number.

11123118 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11123118 is an abundant number, since it is smaller than the sum of its proper divisors (12977010).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11123118 is a wasteful number, since it uses less digits than its factorization.

11123118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617959 (or 617956 counting only the distinct ones).

The product of its digits is 48, while the sum is 18.

The square root of 11123118 is about 3335.1338803712. The cubic root of 11123118 is about 223.2246658292.

Adding to 11123118 its reverse (81132111), we get a palindrome (92255229).

The spelling of 11123118 in words is "eleven million, one hundred twenty-three thousand, one hundred eighteen".