11202221002221 has 12 divisors (see below), whose sum is σ = 16181915152572. Its totient is φ = 7467718445376.

The previous prime is 11202221002211. The next prime is 11202221002241. The reversal of 11202221002221 is 12220012220211.

It is a happy number.

11202221002221 is a `hidden beast` number, since 1 + 120 + 222 + 100 + 2 + 221 = 666.

11202221002221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 5538439785321 + 5663781216900 = 2353389^2 + 2379870^2 .

It is not a de Polignac number, because 11202221002221 - 2¹⁹ = 11202220477933 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11202221002194 and 11202221002203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11202221002211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35575326 + ... + 35888831.

It is an arithmetic number, because the mean of its divisors is an integer number (1348492929381).

Almost surely, 2^{11202221002221} is an apocalyptic number.

It is an amenable number.

11202221002221 is a deficient number, since it is larger than the sum of its proper divisors (4979694150351).

11202221002221 is a wasteful number, since it uses less digits than its factorization.

11202221002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71481580 (or 71481577 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 11202221002221 its reverse (12220012220211), we get a palindrome (23422233222432).

The spelling of 11202221002221 in words is "eleven trillion, two hundred two billion, two hundred twenty-one million, two thousand, two hundred twenty-one".