111220222001111 has 2 divisors, whose sum is σ = 111220222001112. Its totient is φ = 111220222001110.

The previous prime is 111220222001069. The next prime is 111220222001159. The reversal of 111220222001111 is 111100222022111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111220222001111 - 2⁴⁶ = 40851477823447 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111220222001111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111220222051111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55610111000555 + 55610111000556.

It is an arithmetic number, because the mean of its divisors is an integer number (55610111000556).

Almost surely, 2^{111220222001111} is an apocalyptic number.

111220222001111 is a deficient number, since it is larger than the sum of its proper divisors (1).

111220222001111 is an equidigital number, since it uses as much as digits as its factorization.

111220222001111 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 17.

Adding to 111220222001111 its reverse (111100222022111), we get a palindrome (222320444023222).

The spelling of 111220222001111 in words is "one hundred eleven trillion, two hundred twenty billion, two hundred twenty-two million, one thousand, one hundred eleven".