11221122220011 has 18 divisors (see below), whose sum is σ = 17681820866892. Its totient is φ = 6800659933320.

The previous prime is 11221122219961. The next prime is 11221122220079. The reversal of 11221122220011 is 11002222112211.

11221122220011 is a `hidden beast` number, since 11 + 221 + 1 + 222 + 200 + 11 = 666.

It is not a de Polignac number, because 11221122220011 - 2⁷ = 11221122219883 is a prime.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (11221122220111) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 33161700 + ... + 33498366.

It is an arithmetic number, because the mean of its divisors is an integer number (982323381494).

Almost surely, 2^{11221122220011} is an apocalyptic number.

11221122220011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11221122220011 is a deficient number, since it is larger than the sum of its proper divisors (6460698646881).

11221122220011 is an frugal number, since it uses more digits than its factorization.

11221122220011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673351 (or 336681 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11221122220011 its reverse (11002222112211), we get a palindrome (22223344332222).

The spelling of 11221122220011 in words is "eleven trillion, two hundred twenty-one billion, one hundred twenty-two million, two hundred twenty thousand, eleven".