11122111122011 has 4 divisors (see below), whose sum is σ = 11178568539072. Its totient is φ = 11065653704952.

The previous prime is 11122111122007. The next prime is 11122111122029. The reversal of 11122111122011 is 11022111122111.

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 11122111122011 - 2² = 11122111122007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11122111122511) 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, 28228708235 + ... + 28228708628.

It is an arithmetic number, because the mean of its divisors is an integer number (2794642134768).

Almost surely, 2^{11122111122011} is an apocalyptic number.

11122111122011 is a deficient number, since it is larger than the sum of its proper divisors (56457417061).

11122111122011 is an equidigital number, since it uses as much as digits as its factorization.

11122111122011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56457417060.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 11122111122011 its reverse (11022111122111), we get a palindrome (22144222244122).

The spelling of 11122111122011 in words is "eleven trillion, one hundred twenty-two billion, one hundred eleven million, one hundred twenty-two thousand, eleven".