111120112021111 has 2 divisors, whose sum is σ = 111120112021112. Its totient is φ = 111120112021110.

The previous prime is 111120112021099. The next prime is 111120112021129. The reversal of 111120112021111 is 111120211021111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111120112021111 - 2²⁵ = 111120078466679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111120112021181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55560056010555 + 55560056010556.

It is an arithmetic number, because the mean of its divisors is an integer number (55560056010556).

Almost surely, 2^{111120112021111} is an apocalyptic number.

111120112021111 is a deficient number, since it is larger than the sum of its proper divisors (1).

111120112021111 is an equidigital number, since it uses as much as digits as its factorization.

111120112021111 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 16.

Adding to 111120112021111 its reverse (111120211021111), we get a palindrome (222240323042222).

The spelling of 111120112021111 in words is "one hundred eleven trillion, one hundred twenty billion, one hundred twelve million, twenty-one thousand, one hundred eleven".