11220221323221 has 16 divisors (see below), whose sum is σ = 15851849563584. Its totient is φ = 7035011266304.

The previous prime is 11220221323147. The next prime is 11220221323231. The reversal of 11220221323221 is 12232312202211.

It is a cyclic number.

It is not a de Polignac number, because 11220221323221 - 2²⁵ = 11220187768789 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11220221323191 and 11220221323200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220221323231) 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 15 ways as a sum of consecutive naturals, for example, 80048091 + ... + 80188136.

It is an arithmetic number, because the mean of its divisors is an integer number (990740597724).

Almost surely, 2^{11220221323221} is an apocalyptic number.

It is an amenable number.

11220221323221 is a deficient number, since it is larger than the sum of its proper divisors (4631628240363).

11220221323221 is a wasteful number, since it uses less digits than its factorization.

11220221323221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160237620.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 11220221323221 its reverse (12232312202211), we get a palindrome (23452533525432).

The spelling of 11220221323221 in words is "eleven trillion, two hundred twenty billion, two hundred twenty-one million, three hundred twenty-three thousand, two hundred twenty-one".