11110121221211 has 16 divisors (see below), whose sum is σ = 12066292963200. Its totient is φ = 10194786100800.

The previous prime is 11110121221201. The next prime is 11110121221271. The reversal of 11110121221211 is 11212212101111.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11110121221211 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 11110121221211.

It is not an unprimeable number, because it can be changed into a prime (11110121221201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51193985 + ... + 51410546.

It is an arithmetic number, because the mean of its divisors is an integer number (754143310200).

Almost surely, 2^{11110121221211} is an apocalyptic number.

11110121221211 is a deficient number, since it is larger than the sum of its proper divisors (956171741989).

11110121221211 is a wasteful number, since it uses less digits than its factorization.

11110121221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102604730.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 11110121221211 its reverse (11212212101111), we get a palindrome (22322333322322).

The spelling of 11110121221211 in words is "eleven trillion, one hundred ten billion, one hundred twenty-one million, two hundred twenty-one thousand, two hundred eleven".