11101200002221 has 4 divisors (see below), whose sum is σ = 12687085716832. Its totient is φ = 9515314287612.

The previous prime is 11101200002171. The next prime is 11101200002237. The reversal of 11101200002221 is 12220000210111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 11101200002221 - 2¹¹ = 11101200000173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11101200002281) 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, 792942857295 + ... + 792942857308.

It is an arithmetic number, because the mean of its divisors is an integer number (3171771429208).

Almost surely, 2^{11101200002221} is an apocalyptic number.

It is an amenable number.

11101200002221 is a deficient number, since it is larger than the sum of its proper divisors (1585885714611).

11101200002221 is an equidigital number, since it uses as much as digits as its factorization.

11101200002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585885714610.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 11101200002221 its reverse (12220000210111), we get a palindrome (23321200212332).

The spelling of 11101200002221 in words is "eleven trillion, one hundred one billion, two hundred million, two thousand, two hundred twenty-one".