11123521113011 has 4 divisors (see below), whose sum is σ = 11124955118592. Its totient is φ = 11122087107432.

The previous prime is 11123521113007. The next prime is 11123521113053. The reversal of 11123521113011 is 11031112532111.

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 11123521113011 - 2² = 11123521113007 is a prime.

It is a super-2 number, since 2×11123521113011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11123521103011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 716991155 + ... + 717006668.

It is an arithmetic number, because the mean of its divisors is an integer number (2781238779648).

Almost surely, 2^{11123521113011} is an apocalyptic number.

11123521113011 is a deficient number, since it is larger than the sum of its proper divisors (1434005581).

11123521113011 is an equidigital number, since it uses as much as digits as its factorization.

11123521113011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1434005580.

The product of its (nonzero) digits is 180, while the sum is 23.

Adding to 11123521113011 its reverse (11031112532111), we get a palindrome (22154633645122).

The spelling of 11123521113011 in words is "eleven trillion, one hundred twenty-three billion, five hundred twenty-one million, one hundred thirteen thousand, eleven".