11001123 has 16 divisors (see below), whose sum is σ = 18626560. Its totient is φ = 6286248.

The previous prime is 11001103. The next prime is 11001131. The reversal of 11001123 is 32110011.

It is not a de Polignac number, because 11001123 - 2¹⁴ = 10984739 is a prime.

It is a super-2 number, since 2×11001123² = 242049414522258, which contains 22 as substring.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11001103) 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, 28915 + ... + 29292.

It is an arithmetic number, because the mean of its divisors is an integer number (1164160).

Almost surely, 2^11001123 is an apocalyptic number.

11001123 is a deficient number, since it is larger than the sum of its proper divisors (7625437).

11001123 is an equidigital number, since it uses as much as digits as its factorization.

11001123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58223 (or 58217 counting only the distinct ones).

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

The square root of 11001123 is about 3316.7940846546. The cubic root of 11001123 is about 222.4055770710.

Adding to 11001123 its reverse (32110011), we get a palindrome (43111134).

The spelling of 11001123 in words is "eleven million, one thousand, one hundred twenty-three".