11011200222221 has 4 divisors (see below), whose sum is σ = 11011666249500. Its totient is φ = 11010734194944.

The previous prime is 11011200222161. The next prime is 11011200222229. The reversal of 11011200222221 is 12222200211011.

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 4502400196996 + 6508800025225 = 2121886^2 + 2551235^2 .

It is a cyclic number.

It is not a de Polignac number, because 11011200222221 - 2²² = 11011196027917 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 11011200222221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11011200222229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 232978196 + ... + 233025453.

It is an arithmetic number, because the mean of its divisors is an integer number (2752916562375).

Almost surely, 2^{11011200222221} is an apocalyptic number.

It is an amenable number.

11011200222221 is a deficient number, since it is larger than the sum of its proper divisors (466027279).

11011200222221 is an equidigital number, since it uses as much as digits as its factorization.

11011200222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466027278.

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

Adding to 11011200222221 its reverse (12222200211011), we get a palindrome (23233400433232).

The spelling of 11011200222221 in words is "eleven trillion, eleven billion, two hundred million, two hundred twenty-two thousand, two hundred twenty-one".