11122221112211 has 32 divisors (see below), whose sum is σ = 12279653761536. Its totient is φ = 9989622720000.

The previous prime is 11122221112207. The next prime is 11122221112217. The reversal of 11122221112211 is 11221112222111.

It is a happy number.

It is not a de Polignac number, because 11122221112211 - 2² = 11122221112207 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (11122221112217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1650912635 + ... + 1650919371.

It is an arithmetic number, because the mean of its divisors is an integer number (383739180048).

Almost surely, 2^{11122221112211} is an apocalyptic number.

11122221112211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11122221112211 is a deficient number, since it is larger than the sum of its proper divisors (1157432649325).

11122221112211 is a wasteful number, since it uses less digits than its factorization.

11122221112211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9803.

The product of its digits is 64, while the sum is 20.

Adding to 11122221112211 its reverse (11221112222111), we get a palindrome (22343333334322).

The spelling of 11122221112211 in words is "eleven trillion, one hundred twenty-two billion, two hundred twenty-one million, one hundred twelve thousand, two hundred eleven".