11031220011 has 24 divisors (see below), whose sum is σ = 17126197200. Its totient is φ = 6297457152.

The previous prime is 11031220001. The next prime is 11031220037. The reversal of 11031220011 is 11002213011.

It is not a de Polignac number, because 11031220011 - 2⁹ = 11031219499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11031220001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 118435 + ... + 189971.

It is an arithmetic number, because the mean of its divisors is an integer number (713591550).

Almost surely, 2^11031220011 is an apocalyptic number.

11031220011 is a deficient number, since it is larger than the sum of its proper divisors (6094977189).

11031220011 is a wasteful number, since it uses less digits than its factorization.

11031220011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72603 (or 72596 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 11031220011 its reverse (11002213011), we get a palindrome (22033433022).

The spelling of 11031220011 in words is "eleven billion, thirty-one million, two hundred twenty thousand, eleven".