11321222387 has 2 divisors, whose sum is σ = 11321222388. Its totient is φ = 11321222386.

The previous prime is 11321222329. The next prime is 11321222389. The reversal of 11321222387 is 78322212311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11321222387 - 2⁶ = 11321222323 is a prime.

Together with 11321222389, 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 (11321222389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5660611193 + 5660611194.

It is an arithmetic number, because the mean of its divisors is an integer number (5660611194).

Almost surely, 2^11321222387 is an apocalyptic number.

11321222387 is a deficient number, since it is larger than the sum of its proper divisors (1).

11321222387 is an equidigital number, since it uses as much as digits as its factorization.

11321222387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 32.

Adding to 11321222387 its reverse (78322212311), we get a palindrome (89643434698).

The spelling of 11321222387 in words is "eleven billion, three hundred twenty-one million, two hundred twenty-two thousand, three hundred eighty-seven".