1111111120111 has 2 divisors, whose sum is σ = 1111111120112. Its totient is φ = 1111111120110.

The previous prime is 1111111120073. The next prime is 1111111120129. The reversal of 1111111120111 is 1110211111111.

It is a strong prime.

It is an emirp because it is prime and its reverse (1110211111111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1111111120111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1111111120091 and 1111111120100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111111124111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555555560055 + 555555560056.

It is an arithmetic number, because the mean of its divisors is an integer number (555555560056).

Almost surely, 2^{1111111120111} is an apocalyptic number.

1111111120111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111111120111 is an equidigital number, since it uses as much as digits as its factorization.

1111111120111 is an evil number, because the sum of its binary digits is even.

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

Adding to 1111111120111 its reverse (1110211111111), we get a palindrome (2221322231222).

The spelling of 1111111120111 in words is "one trillion, one hundred eleven billion, one hundred eleven million, one hundred twenty thousand, one hundred eleven".