11123100 has 108 divisors (see below), whose sum is σ = 36966384. Its totient is φ = 2787840.

The previous prime is 11123071. The next prime is 11123107. The reversal of 11123100 is 132111.

It is a super-2 number, since 2×11123100² = 247446707220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11123107) 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 35 ways as a sum of consecutive naturals, for example, 14937 + ... + 15663.

Almost surely, 2^11123100 is an apocalyptic number.

11123100 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 11123100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18483192).

11123100 is an abundant number, since it is smaller than the sum of its proper divisors (25843284).

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

11123100 is a wasteful number, since it uses less digits than its factorization.

11123100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764 (or 754 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 11123100 is about 3335.1311818278. The cubic root of 11123100 is about 223.2245454179.

Adding to 11123100 its reverse (132111), we get a palindrome (11255211).

The spelling of 11123100 in words is "eleven million, one hundred twenty-three thousand, one hundred".