11011321232011 has 4 divisors (see below), whose sum is σ = 11011939620192. Its totient is φ = 11010702843832.

The previous prime is 11011321231987. The next prime is 11011321232029. The reversal of 11011321232011 is 11023212311011.

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 11011321232011 - 2¹⁷ = 11011321100939 is a prime.

It is a super-2 number, since 2×11011321232011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11011321232011.

It is not an unprimeable number, because it can be changed into a prime (11011321235011) 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, 309167380 + ... + 309202993.

It is an arithmetic number, because the mean of its divisors is an integer number (2752984905048).

Almost surely, 2^{11011321232011} is an apocalyptic number.

11011321232011 is a deficient number, since it is larger than the sum of its proper divisors (618388181).

11011321232011 is an equidigital number, since it uses as much as digits as its factorization.

11011321232011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618388180.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 11011321232011 its reverse (11023212311011), we get a palindrome (22034533543022).

The spelling of 11011321232011 in words is "eleven trillion, eleven billion, three hundred twenty-one million, two hundred thirty-two thousand, eleven".