222011111111 has 2 divisors, whose sum is σ = 222011111112. Its totient is φ = 222011111110.

The previous prime is 222011111089. The next prime is 222011111129. The reversal of 222011111111 is 111111110222.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222011111111 is a prime.

222011111111 is a modest number, since divided by 1111111 gives 22201 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222011101111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111005555555 + 111005555556.

It is an arithmetic number, because the mean of its divisors is an integer number (111005555556).

Almost surely, 2^222011111111 is an apocalyptic number.

222011111111 is a deficient number, since it is larger than the sum of its proper divisors (1).

222011111111 is an equidigital number, since it uses as much as digits as its factorization.

222011111111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 222011111111 its reverse (111111110222), we get a palindrome (333122221333).

The spelling of 222011111111 in words is "two hundred twenty-two billion, eleven million, one hundred eleven thousand, one hundred eleven".