11123122011 has 8 divisors (see below), whose sum is σ = 14997468240. Its totient is φ = 7332095232.

The previous prime is 11123122001. The next prime is 11123122039. The reversal of 11123122011 is 11022132111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11123122011 - 2¹⁷ = 11122990939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11123122001) 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 7 ways as a sum of consecutive naturals, for example, 20829550 + ... + 20830083.

It is an arithmetic number, because the mean of its divisors is an integer number (1874683530).

Almost surely, 2^11123122011 is an apocalyptic number.

11123122011 is a deficient number, since it is larger than the sum of its proper divisors (3874346229).

11123122011 is an equidigital number, since it uses as much as digits as its factorization.

11123122011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41659725.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 11123122011 its reverse (11022132111), we get a palindrome (22145254122).

The spelling of 11123122011 in words is "eleven billion, one hundred twenty-three million, one hundred twenty-two thousand, eleven".