11212211105 has 8 divisors (see below), whose sum is σ = 13455292200. Its totient is φ = 8969342976.

The previous prime is 11212211089. The next prime is 11212211113. The reversal of 11212211105 is 50111221211.

It can be written as a sum of positive squares in 4 ways, for example, as 4385485729 + 6826725376 = 66223^2 + 82624^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 11212211105 - 2⁴ = 11212211089 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105761 + ... + 183329.

It is an arithmetic number, because the mean of its divisors is an integer number (1681911525).

Almost surely, 2^11212211105 is an apocalyptic number.

It is an amenable number.

11212211105 is a deficient number, since it is larger than the sum of its proper divisors (2243081095).

11212211105 is an equidigital number, since it uses as much as digits as its factorization.

11212211105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106483.

The product of its (nonzero) digits is 40, while the sum is 17.

Adding to 11212211105 its reverse (50111221211), we get a palindrome (61323432316).

The spelling of 11212211105 in words is "eleven billion, two hundred twelve million, two hundred eleven thousand, one hundred five".