1121111110111 has 2 divisors, whose sum is σ = 1121111110112. Its totient is φ = 1121111110110.

The previous prime is 1121111110057. The next prime is 1121111110201. The reversal of 1121111110111 is 1110111111211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1121111110111 - 2²³ = 1121102721503 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121111110091 and 1121111110100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121111110811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560555555055 + 560555555056.

It is an arithmetic number, because the mean of its divisors is an integer number (560555555056).

Almost surely, 2^{1121111110111} is an apocalyptic number.

1121111110111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121111110111 is an equidigital number, since it uses as much as digits as its factorization.

1121111110111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2, while the sum is 13.

Adding to 1121111110111 its reverse (1110111111211), we get a palindrome (2231222221322).

The spelling of 1121111110111 in words is "one trillion, one hundred twenty-one billion, one hundred eleven million, one hundred ten thousand, one hundred eleven".