11212320011 has 2 divisors, whose sum is σ = 11212320012. Its totient is φ = 11212320010.

The previous prime is 11212319917. The next prime is 11212320013. The reversal of 11212320011 is 11002321211.

11212320011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11212320011 is a prime.

It is a super-2 number, since 2×11212320011² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 11212320013, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11212320013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5606160005 + 5606160006.

It is an arithmetic number, because the mean of its divisors is an integer number (5606160006).

Almost surely, 2^11212320011 is an apocalyptic number.

11212320011 is a deficient number, since it is larger than the sum of its proper divisors (1).

11212320011 is an equidigital number, since it uses as much as digits as its factorization.

11212320011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 11212320011 its reverse (11002321211), we get a palindrome (22214641222).

The spelling of 11212320011 in words is "eleven billion, two hundred twelve million, three hundred twenty thousand, eleven".