11011220011 has 16 divisors (see below), whose sum is σ = 12100082688. Its totient is φ = 9937144800.

The previous prime is 11011219987. The next prime is 11011220023. The reversal of 11011220011 is 11002211011.

It is not a de Polignac number, because 11011220011 - 2¹⁷ = 11011088939 is a prime.

It is a super-2 number, since 2×11011220011² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11011220011.

It is not an unprimeable number, because it can be changed into a prime (11011220041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1773765 + ... + 1779961.

It is an arithmetic number, because the mean of its divisors is an integer number (756255168).

Almost surely, 2^11011220011 is an apocalyptic number.

11011220011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11011220011 is a deficient number, since it is larger than the sum of its proper divisors (1088862677).

11011220011 is a wasteful number, since it uses less digits than its factorization.

11011220011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7362.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 11011220011 its reverse (11002211011), we get a palindrome (22013431022).

The spelling of 11011220011 in words is "eleven billion, eleven million, two hundred twenty thousand, eleven".