1101320312011 has 2 divisors, whose sum is σ = 1101320312012. Its totient is φ = 1101320312010.

The previous prime is 1101320312009. The next prime is 1101320312023. The reversal of 1101320312011 is 1102130231011.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (1102130231011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1101320312011 - 2¹ = 1101320312009 is a prime.

Together with 1101320312009, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1101320313011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550660156005 + 550660156006.

It is an arithmetic number, because the mean of its divisors is an integer number (550660156006).

Almost surely, 2^{1101320312011} is an apocalyptic number.

1101320312011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101320312011 is an equidigital number, since it uses as much as digits as its factorization.

1101320312011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1101320312011 its reverse (1102130231011), we get a palindrome (2203450543022).

The spelling of 1101320312011 in words is "one trillion, one hundred one billion, three hundred twenty million, three hundred twelve thousand, eleven".