111122011111211 has 8 divisors (see below), whose sum is σ = 111173403944064. Its totient is φ = 111070629613440.

The previous prime is 111122011111151. The next prime is 111122011111217. The reversal of 111122011111211 is 112111110221111.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111122011111211 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 111122011111211.

It is not an unprimeable number, because it can be changed into a prime (111122011111217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16808966 + ... + 22467428.

It is an arithmetic number, because the mean of its divisors is an integer number (13896675493008).

Almost surely, 2^{111122011111211} is an apocalyptic number.

111122011111211 is a deficient number, since it is larger than the sum of its proper divisors (51392832853).

111122011111211 is an equidigital number, since it uses as much as digits as its factorization.

111122011111211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5667541.

The product of its (nonzero) digits is 8, while the sum is 17.

Adding to 111122011111211 its reverse (112111110221111), we get a palindrome (223233121332322).

The spelling of 111122011111211 in words is "one hundred eleven trillion, one hundred twenty-two billion, eleven million, one hundred eleven thousand, two hundred eleven".