11202221022121 has 2 divisors, whose sum is σ = 11202221022122. Its totient is φ = 11202221022120.

The previous prime is 11202221022079. The next prime is 11202221022199. The reversal of 11202221022121 is 12122012220211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11201143869721 + 1077152400 = 3346811^2 + 32820^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11202221022121 is a prime.

It is not a weakly prime, because it can be changed into another prime (11202221029121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5601110511060 + 5601110511061.

It is an arithmetic number, because the mean of its divisors is an integer number (5601110511061).

Almost surely, 2^{11202221022121} is an apocalyptic number.

It is an amenable number.

11202221022121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11202221022121 is an equidigital number, since it uses as much as digits as its factorization.

11202221022121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 11202221022121 its reverse (12122012220211), we get a palindrome (23324233242332).

The spelling of 11202221022121 in words is "eleven trillion, two hundred two billion, two hundred twenty-one million, twenty-two thousand, one hundred twenty-one".