11201020002221 has 4 divisors (see below), whose sum is σ = 12801165716832. Its totient is φ = 9600874287612.

The previous prime is 11201020002217. The next prime is 11201020002301. The reversal of 11201020002221 is 12220002010211.

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 a cyclic number.

It is not a de Polignac number, because 11201020002221 - 2² = 11201020002217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11201020002196 and 11201020002205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11201020002721) 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, 800072857295 + ... + 800072857308.

It is an arithmetic number, because the mean of its divisors is an integer number (3200291429208).

Almost surely, 2^{11201020002221} is an apocalyptic number.

It is an amenable number.

11201020002221 is a deficient number, since it is larger than the sum of its proper divisors (1600145714611).

11201020002221 is an equidigital number, since it uses as much as digits as its factorization.

11201020002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1600145714610.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 11201020002221 its reverse (12220002010211), we get a palindrome (23421022012432).

The spelling of 11201020002221 in words is "eleven trillion, two hundred one billion, twenty million, two thousand, two hundred twenty-one".