111122112222211 has 2 divisors, whose sum is σ = 111122112222212. Its totient is φ = 111122112222210.

The previous prime is 111122112222181. The next prime is 111122112222227. The reversal of 111122112222211 is 112222211221111.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111122112222211 is a prime.

It is a zygodrome in base 10.

It is not a weakly prime, because it can be changed into another prime (111122112229211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55561056111105 + 55561056111106.

It is an arithmetic number, because the mean of its divisors is an integer number (55561056111106).

Almost surely, 2^{111122112222211} is an apocalyptic number.

111122112222211 is a deficient number, since it is larger than the sum of its proper divisors (1).

111122112222211 is an equidigital number, since it uses as much as digits as its factorization.

111122112222211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 128, while the sum is 22.

Adding to 111122112222211 its reverse (112222211221111), we get a palindrome (223344323443322).

The spelling of 111122112222211 in words is "one hundred eleven trillion, one hundred twenty-two billion, one hundred twelve million, two hundred twenty-two thousand, two hundred eleven".