11121924 has 48 divisors (see below), whose sum is σ = 28607040. Its totient is φ = 3335040.

The previous prime is 11121919. The next prime is 11121953. The reversal of 11121924 is 42912111.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 11121924.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14002 + ... + 14774.

It is an arithmetic number, because the mean of its divisors is an integer number (595980).

Almost surely, 2^11121924 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11121924, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14303520).

11121924 is an abundant number, since it is smaller than the sum of its proper divisors (17485116).

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

11121924 is a wasteful number, since it uses less digits than its factorization.

11121924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900 (or 898 counting only the distinct ones).

The product of its digits is 144, while the sum is 21.

The square root of 11121924 is about 3334.9548722584. The cubic root of 11121924 is about 223.2166782671.

The spelling of 11121924 in words is "eleven million, one hundred twenty-one thousand, nine hundred twenty-four".