11136121111111 has 2 divisors, whose sum is σ = 11136121111112. Its totient is φ = 11136121111110.

The previous prime is 11136121111109. The next prime is 11136121111147. The reversal of 11136121111111 is 11111112163111.

It is a m-pointer prime, because the next prime (11136121111147) can be obtained adding 11136121111111 to its product of digits (36).

It is a weak prime.

It is an emirp because it is prime and its reverse (11111112163111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11136121111111 - 2¹ = 11136121111109 is a prime.

Together with 11136121111109, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11136121111811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5568060555555 + 5568060555556.

It is an arithmetic number, because the mean of its divisors is an integer number (5568060555556).

Almost surely, 2^{11136121111111} is an apocalyptic number.

11136121111111 is a deficient number, since it is larger than the sum of its proper divisors (1).

11136121111111 is an equidigital number, since it uses as much as digits as its factorization.

11136121111111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36, while the sum is 22.

Adding to 11136121111111 its reverse (11111112163111), we get a palindrome (22247233274222).

The spelling of 11136121111111 in words is "eleven trillion, one hundred thirty-six billion, one hundred twenty-one million, one hundred eleven thousand, one hundred eleven".