111122220211 has 2 divisors, whose sum is σ = 111122220212. Its totient is φ = 111122220210.

The previous prime is 111122220191. The next prime is 111122220227. The reversal of 111122220211 is 112022221111.

It is an a-pointer prime, because the next prime (111122220227) can be obtained adding 111122220211 to its sum of digits (16).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111122220211 - 2¹⁷ = 111122089139 is a prime.

It is not a weakly prime, because it can be changed into another prime (111122223211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55561110105 + 55561110106.

It is an arithmetic number, because the mean of its divisors is an integer number (55561110106).

Almost surely, 2^111122220211 is an apocalyptic number.

111122220211 is a deficient number, since it is larger than the sum of its proper divisors (1).

111122220211 is an equidigital number, since it uses as much as digits as its factorization.

111122220211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 111122220211 its reverse (112022221111), we get a palindrome (223144441322).

The spelling of 111122220211 in words is "one hundred eleven billion, one hundred twenty-two million, two hundred twenty thousand, two hundred eleven".