11001123011 has 4 divisors (see below), whose sum is σ = 11648247912. Its totient is φ = 10353998112.

The previous prime is 11001122989. The next prime is 11001123043. The reversal of 11001123011 is 11032110011.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11001123011 - 2¹⁸ = 11000860867 is a prime.

It is a super-2 number, since 2×11001123011² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11001122983 and 11001123001.

It is not an unprimeable number, because it can be changed into a prime (11001123811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323562425 + ... + 323562458.

It is an arithmetic number, because the mean of its divisors is an integer number (2912061978).

Almost surely, 2^11001123011 is an apocalyptic number.

11001123011 is a deficient number, since it is larger than the sum of its proper divisors (647124901).

11001123011 is an equidigital number, since it uses as much as digits as its factorization.

11001123011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647124900.

The product of its (nonzero) digits is 6, while the sum is 11.

Adding to 11001123011 its reverse (11032110011), we get a palindrome (22033233022).

The spelling of 11001123011 in words is "eleven billion, one million, one hundred twenty-three thousand, eleven".