111211222112111 has 12 divisors (see below), whose sum is σ = 122322640495776. Its totient is φ = 101033120860320.

The previous prime is 111211222112077. The next prime is 111211222112117.

111211222112111 is nontrivially palindromic in base 10.

It is a de Polignac number, because none of the positive numbers 2^k-111211222112111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111211222112117) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 308865470 + ... + 309225323.

It is an arithmetic number, because the mean of its divisors is an integer number (10193553374648).

Almost surely, 2^{111211222112111} is an apocalyptic number.

111211222112111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111211222112111 is a deficient number, since it is larger than the sum of its proper divisors (11111418383665).

111211222112111 is a wasteful number, since it uses less digits than its factorization.

111211222112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618092302 (or 618092291 counting only the distinct ones).

The product of its digits is 32, while the sum is 20.

The spelling of 111211222112111 in words is "one hundred eleven trillion, two hundred eleven billion, two hundred twenty-two million, one hundred twelve thousand, one hundred eleven".