11221220120111 has 8 divisors (see below), whose sum is σ = 11816522187360. Its totient is φ = 10634869963872.

The previous prime is 11221220120101. The next prime is 11221220120153. The reversal of 11221220120111 is 11102102212211.

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-11221220120111 is a prime.

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 11221220120111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221220120101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2237975180 + ... + 2237980193.

It is an arithmetic number, because the mean of its divisors is an integer number (1477065273420).

Almost surely, 2^{11221220120111} is an apocalyptic number.

11221220120111 is a deficient number, since it is larger than the sum of its proper divisors (595302067249).

11221220120111 is a wasteful number, since it uses less digits than its factorization.

11221220120111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4475955505.

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

Adding to 11221220120111 its reverse (11102102212211), we get a palindrome (22323322332322).

The spelling of 11221220120111 in words is "eleven trillion, two hundred twenty-one billion, two hundred twenty million, one hundred twenty thousand, one hundred eleven".