11109124512 has 96 divisors (see below), whose sum is σ = 32429799360. Its totient is φ = 3699820800.

The previous prime is 11109124493. The next prime is 11109124513. The reversal of 11109124512 is 21542190111.

11109124512 is a `hidden beast` number, since 11 + 10 + 9 + 124 + 512 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (11109124513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1119123 + ... + 1129005.

It is an arithmetic number, because the mean of its divisors is an integer number (337810410).

Almost surely, 2^11109124512 is an apocalyptic number.

11109124512 is a gapful number since it is divisible by the number (12) 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 11109124512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16214899680).

11109124512 is an abundant number, since it is smaller than the sum of its proper divisors (21320674848).

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

11109124512 is a wasteful number, since it uses less digits than its factorization.

11109124512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11203 (or 11189 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 27.

The spelling of 11109124512 in words is "eleven billion, one hundred nine million, one hundred twenty-four thousand, five hundred twelve".