11001020011 has 4 divisors (see below), whose sum is σ = 11001721192. Its totient is φ = 11000318832.

The previous prime is 11001019999. The next prime is 11001020021. The reversal of 11001020011 is 11002010011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11002010011 = 19009 ⋅578779.

It is a cyclic number.

It is not a de Polignac number, because 11001020011 - 2¹⁷ = 11000888939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11001019976 and 11001020003.

It is not an unprimeable number, because it can be changed into a prime (11001020021) 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, 326505 + ... + 358618.

It is an arithmetic number, because the mean of its divisors is an integer number (2750430298).

Almost surely, 2^11001020011 is an apocalyptic number.

11001020011 is a deficient number, since it is larger than the sum of its proper divisors (701181).

11001020011 is an equidigital number, since it uses as much as digits as its factorization.

11001020011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701180.

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 11001020011 its reverse (11002010011), we get a palindrome (22003030022).

The spelling of 11001020011 in words is "eleven billion, one million, twenty thousand, eleven".