11109000 has 192 divisors, whose sum is σ = 41408640. Its totient is φ = 2428800.

The previous prime is 11108989. The next prime is 11109011. The reversal of 11109000 is 90111.

It is an interprime number because it is at equal distance from previous prime (11108989) and next prime (11109011).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 482989 + ... + 483011.

It is an arithmetic number, because the mean of its divisors is an integer number (215670).

Almost surely, 2^11109000 is an apocalyptic number.

11109000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11109000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20704320).

11109000 is an abundant number, since it is smaller than the sum of its proper divisors (30299640).

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

11109000 is a wasteful number, since it uses less digits than its factorization.

11109000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77 (or 40 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 12.

The square root of 11109000 is about 3333.0166516236. The cubic root of 11109000 is about 223.1301833255.

Adding to 11109000 its reverse (90111), we get a palindrome (11199111).

The spelling of 11109000 in words is "eleven million, one hundred nine thousand".