11011122011 has 4 divisors (see below), whose sum is σ = 11050873632. Its totient is φ = 10971370392.

The previous prime is 11011121983. The next prime is 11011122013. The reversal of 11011122011 is 11022111011.

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 11011122011 - 2¹⁰ = 11011120987 is a prime.

It is a super-2 number, since 2×11011122011² (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 = 11011121983 and 11011122001.

It is not an unprimeable number, because it can be changed into a prime (11011122013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19875395 + ... + 19875948.

It is an arithmetic number, because the mean of its divisors is an integer number (2762718408).

Almost surely, 2^11011122011 is an apocalyptic number.

11011122011 is a deficient number, since it is larger than the sum of its proper divisors (39751621).

11011122011 is an equidigital number, since it uses as much as digits as its factorization.

11011122011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39751620.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 11011122011 its reverse (11022111011), we get a palindrome (22033233022).

The spelling of 11011122011 in words is "eleven billion, eleven million, one hundred twenty-two thousand, eleven".