11001105 has 24 divisors (see below), whose sum is σ = 19206720. Its totient is φ = 5824800.

The previous prime is 11001103. The next prime is 11001131. The reversal of 11001105 is 50110011.

It is not a de Polignac number, because 11001105 - 2¹ = 11001103 is a prime.

It is a super-2 number, since 2×11001105² = 242048622442050, 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 (11001103) 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 23 ways as a sum of consecutive naturals, for example, 5986 + ... + 7604.

It is an arithmetic number, because the mean of its divisors is an integer number (800280).

Almost surely, 2^11001105 is an apocalyptic number.

11001105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11001105 is a deficient number, since it is larger than the sum of its proper divisors (8205615).

11001105 is a wasteful number, since it uses less digits than its factorization.

11001105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1781 (or 1778 counting only the distinct ones).

The product of its (nonzero) digits is 5, while the sum is 9.

The square root of 11001105 is about 3316.7913711899. The cubic root of 11001105 is about 222.4054557712.

Adding to 11001105 its reverse (50110011), we get a palindrome (61111116).

The spelling of 11001105 in words is "eleven million, one thousand, one hundred five".