11123320 has 32 divisors (see below), whose sum is σ = 26953920. Its totient is φ = 4106880.

The previous prime is 11123317. The next prime is 11123323. The reversal of 11123320 is 2332111.

It is an interprime number because it is at equal distance from previous prime (11123317) and next prime (11123323).

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 11123320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11123323) 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 7 ways as a sum of consecutive naturals, for example, 10176 + ... + 11215.

It is an arithmetic number, because the mean of its divisors is an integer number (842310).

Almost surely, 2^11123320 is an apocalyptic number.

11123320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11123320 is an abundant number, since it is smaller than the sum of its proper divisors (15830600).

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

11123320 is a wasteful number, since it uses less digits than its factorization.

11123320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21415 (or 21411 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 11123320 is about 3335.1641638756. The cubic root of 11123320 is about 223.2260171023.

Adding to 11123320 its reverse (2332111), we get a palindrome (13455431).

The spelling of 11123320 in words is "eleven million, one hundred twenty-three thousand, three hundred twenty".