11221022102221 has 2 divisors, whose sum is σ = 11221022102222. Its totient is φ = 11221022102220.

The previous prime is 11221022102197. The next prime is 11221022102233. The reversal of 11221022102221 is 12220122012211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9935324641225 + 1285697460996 = 3152035^2 + 1133886^2 .

It is a cyclic number.

It is not a de Polignac number, because 11221022102221 - 2²⁹ = 11220485231309 is a prime.

It is a super-2 number, since 2×11221022102221² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11221022102621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610511051110 + 5610511051111.

It is an arithmetic number, because the mean of its divisors is an integer number (5610511051111).

Almost surely, 2^{11221022102221} is an apocalyptic number.

It is an amenable number.

11221022102221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11221022102221 is an equidigital number, since it uses as much as digits as its factorization.

11221022102221 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 11221022102221 its reverse (12220122012211), we get a palindrome (23441144114432).

The spelling of 11221022102221 in words is "eleven trillion, two hundred twenty-one billion, twenty-two million, one hundred two thousand, two hundred twenty-one".