11022120211221 has 48 divisors (see below), whose sum is σ = 18217346679168. Its totient is φ = 6290706240000.

The previous prime is 11022120211189. The next prime is 11022120211229. The reversal of 11022120211221 is 12211202122011.

11022120211221 is a `hidden beast` number, since 1 + 10 + 221 + 2 + 0 + 211 + 221 = 666.

It is not a de Polignac number, because 11022120211221 - 2⁵ = 11022120211189 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11022120211194 and 11022120211203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11022120211229) 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 in 47 ways as a sum of consecutive naturals, for example, 723181161 + ... + 723196401.

It is an arithmetic number, because the mean of its divisors is an integer number (379528055816).

Almost surely, 2^{11022120211221} is an apocalyptic number.

It is an amenable number.

11022120211221 is a deficient number, since it is larger than the sum of its proper divisors (7195226467947).

11022120211221 is a wasteful number, since it uses less digits than its factorization.

11022120211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28442 (or 28439 counting only the distinct ones).

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

Adding to 11022120211221 its reverse (12211202122011), we get a palindrome (23233322333232).

The spelling of 11022120211221 in words is "eleven trillion, twenty-two billion, one hundred twenty million, two hundred eleven thousand, two hundred twenty-one".