1116161111111 has 2 divisors, whose sum is σ = 1116161111112. Its totient is φ = 1116161111110.

The previous prime is 1116161111081. The next prime is 1116161111147. The reversal of 1116161111111 is 1111111616111.

It is a m-pointer prime, because the next prime (1116161111147) can be obtained adding 1116161111111 to its product of digits (36).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1116161111111 is a prime.

It is a Sophie Germain prime.

1116161111111 is a modest number, since divided by 1111111 gives 111616 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1116161111161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 558080555555 + 558080555556.

It is an arithmetic number, because the mean of its divisors is an integer number (558080555556).

Almost surely, 2^{1116161111111} is an apocalyptic number.

1116161111111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1116161111111 is an equidigital number, since it uses as much as digits as its factorization.

1116161111111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36, while the sum is 23.

Adding to 1116161111111 its reverse (1111111616111), we get a palindrome (2227272727222).

The spelling of 1116161111111 in words is "one trillion, one hundred sixteen billion, one hundred sixty-one million, one hundred eleven thousand, one hundred eleven".