11112012211 has 4 divisors (see below), whose sum is σ = 11154263472. Its totient is φ = 11069760952.

The previous prime is 11112012203. The next prime is 11112012221. The reversal of 11112012211 is 11221021111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11112012211 - 2³ = 11112012203 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11112012191 and 11112012200.

It is not an unprimeable number, because it can be changed into a prime (11112012221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21125236 + ... + 21125761.

It is an arithmetic number, because the mean of its divisors is an integer number (2788565868).

Almost surely, 2^11112012211 is an apocalyptic number.

11112012211 is a deficient number, since it is larger than the sum of its proper divisors (42251261).

11112012211 is an equidigital number, since it uses as much as digits as its factorization.

11112012211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42251260.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11112012211 its reverse (11221021111), we get a palindrome (22333033322).

The spelling of 11112012211 in words is "eleven billion, one hundred twelve million, twelve thousand, two hundred eleven".