11021220011 has 4 divisors (see below), whose sum is σ = 11021430024. Its totient is φ = 11021010000.

The previous prime is 11021219999. The next prime is 11021220121. The reversal of 11021220011 is 11002212011.

11021220011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11021220011 - 2¹⁸ = 11020957867 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11021219974 and 11021220001.

It is not an unprimeable number, because it can be changed into a prime (11021220311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49136 + ... + 156386.

It is an arithmetic number, because the mean of its divisors is an integer number (2755357506).

Almost surely, 2^11021220011 is an apocalyptic number.

11021220011 is a deficient number, since it is larger than the sum of its proper divisors (210013).

11021220011 is a wasteful number, since it uses less digits than its factorization.

11021220011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210012.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 11021220011 its reverse (11002212011), we get a palindrome (22023432022).

The spelling of 11021220011 in words is "eleven billion, twenty-one million, two hundred twenty thousand, eleven".