11120120121221 has 8 divisors (see below), whose sum is σ = 12061421538264. Its totient is φ = 10210727226880.

The previous prime is 11120120121181. The next prime is 11120120121223. The reversal of 11120120121221 is 12212102102111.

11120120121221 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 4 ways, for example, as 1312193160100 + 9807926961121 = 1145510^2 + 3131761^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11120120121221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11120120121221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11120120121223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7977129950 + ... + 7977131343.

It is an arithmetic number, because the mean of its divisors is an integer number (1507677692283).

Almost surely, 2^{11120120121221} is an apocalyptic number.

It is an amenable number.

11120120121221 is a deficient number, since it is larger than the sum of its proper divisors (941301417043).

11120120121221 is a wasteful number, since it uses less digits than its factorization.

11120120121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15954261351.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11120120121221 its reverse (12212102102111), we get a palindrome (23332222223332).

The spelling of 11120120121221 in words is "eleven trillion, one hundred twenty billion, one hundred twenty million, one hundred twenty-one thousand, two hundred twenty-one".