11116120221 has 24 divisors (see below), whose sum is σ = 16931145920. Its totient is φ = 7008477696.

The previous prime is 11116120163. The next prime is 11116120247. The reversal of 11116120221 is 12202161111.

It is not a de Polignac number, because 11116120221 - 2⁹ = 11116119709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11116120194 and 11116120203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11116127221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42336 + ... + 154998.

Almost surely, 2^11116120221 is an apocalyptic number.

It is an amenable number.

11116120221 is a deficient number, since it is larger than the sum of its proper divisors (5815025699).

11116120221 is a wasteful number, since it uses less digits than its factorization.

11116120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113265 (or 113262 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 11116120221 its reverse (12202161111), we get a palindrome (23318281332).

The spelling of 11116120221 in words is "eleven billion, one hundred sixteen million, one hundred twenty thousand, two hundred twenty-one".