11201122210221 has 96 divisors (see below), whose sum is σ = 16857785947392. Its totient is φ = 7163495055360.

The previous prime is 11201122210217. The next prime is 11201122210259. The reversal of 11201122210221 is 12201222110211.

11201122210221 is a `hidden beast` number, since 1 + 120 + 112 + 2 + 210 + 221 = 666.

It is not a de Polignac number, because 11201122210221 - 2² = 11201122210217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11201122210194 and 11201122210203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11201122200221) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1041668781 + ... + 1041679533.

It is an arithmetic number, because the mean of its divisors is an integer number (175601936952).

Almost surely, 2^{11201122210221} is an apocalyptic number.

It is an amenable number.

11201122210221 is a deficient number, since it is larger than the sum of its proper divisors (5656663737171).

11201122210221 is a wasteful number, since it uses less digits than its factorization.

11201122210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11203 (or 11200 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11201122210221 its reverse (12201222110211), we get a palindrome (23402344320432).

It can be divided in two parts, 1120112 and 2210221, that added together give a palindrome (3330333).

The spelling of 11201122210221 in words is "eleven trillion, two hundred one billion, one hundred twenty-two million, two hundred ten thousand, two hundred twenty-one".