11202002022221 has 4 divisors (see below), whose sum is σ = 11202012250752. Its totient is φ = 11201991793692.

The previous prime is 11202002022187. The next prime is 11202002022227. The reversal of 11202002022221 is 12222020020211.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11202002022221 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 11202002022221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11202002022227) 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 3 ways as a sum of consecutive naturals, for example, 3243371 + ... + 5737896.

It is an arithmetic number, because the mean of its divisors is an integer number (2800503062688).

Almost surely, 2^{11202002022221} is an apocalyptic number.

It is an amenable number.

11202002022221 is a deficient number, since it is larger than the sum of its proper divisors (10228531).

11202002022221 is an equidigital number, since it uses as much as digits as its factorization.

11202002022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10228530.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 11202002022221 its reverse (12222020020211), we get a palindrome (23424022042432).

The spelling of 11202002022221 in words is "eleven trillion, two hundred two billion, two million, twenty-two thousand, two hundred twenty-one".