11100116221 has 8 divisors (see below), whose sum is σ = 11857075704. Its totient is φ = 10354713600.

The previous prime is 11100116213. The next prime is 11100116231. The reversal of 11100116221 is 12261100111.

It can be written as a sum of positive squares in 4 ways, for example, as 5707321 + 11094408900 = 2389^2 + 105330^2 .

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

It is not a de Polignac number, because 11100116221 - 2³ = 11100116213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11100116195 and 11100116204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11100116201) 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, 2887230 + ... + 2891071.

It is an arithmetic number, because the mean of its divisors is an integer number (1482134463).

Almost surely, 2^11100116221 is an apocalyptic number.

It is an amenable number.

11100116221 is a deficient number, since it is larger than the sum of its proper divisors (756959483).

11100116221 is a wasteful number, since it uses less digits than its factorization.

11100116221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5778431.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 11100116221 its reverse (12261100111), we get a palindrome (23361216332).

The spelling of 11100116221 in words is "eleven billion, one hundred million, one hundred sixteen thousand, two hundred twenty-one".