11100221002221 has 32 divisors (see below), whose sum is σ = 16407538011648. Its totient is φ = 6630865182720.

The previous prime is 11100221002207. The next prime is 11100221002243. The reversal of 11100221002221 is 12220012200111.

It is not a de Polignac number, because 11100221002221 - 2⁷ = 11100221002093 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11100221002221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11100221702221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8302036 + ... + 9545901.

It is an arithmetic number, because the mean of its divisors is an integer number (512735562864).

Almost surely, 2^{11100221002221} is an apocalyptic number.

It is an amenable number.

11100221002221 is a deficient number, since it is larger than the sum of its proper divisors (5307317009427).

11100221002221 is a wasteful number, since it uses less digits than its factorization.

11100221002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17848421.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11100221002221 its reverse (12220012200111), we get a palindrome (23320233202332).

The spelling of 11100221002221 in words is "eleven trillion, one hundred billion, two hundred twenty-one million, two thousand, two hundred twenty-one".