11100102222221 has 4 divisors (see below), whose sum is σ = 11198333215452. Its totient is φ = 11001871228992.

The previous prime is 11100102222203. The next prime is 11100102222233. The reversal of 11100102222221 is 12222220100111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 75139033225 + 11024963188996 = 274115^2 + 3320386^2 .

It is a cyclic number.

It is not a de Polignac number, because 11100102222221 - 2³⁴ = 11082922353037 is a prime.

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 11100102222221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11100102222271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49115496446 + ... + 49115496671.

It is an arithmetic number, because the mean of its divisors is an integer number (2799583303863).

Almost surely, 2^{11100102222221} is an apocalyptic number.

It is an amenable number.

11100102222221 is a deficient number, since it is larger than the sum of its proper divisors (98230993231).

11100102222221 is an equidigital number, since it uses as much as digits as its factorization.

11100102222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98230993230.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 11100102222221 its reverse (12222220100111), we get a palindrome (23322322322332).

The spelling of 11100102222221 in words is "eleven trillion, one hundred billion, one hundred two million, two hundred twenty-two thousand, two hundred twenty-one".