11123219999 has 2 divisors, whose sum is σ = 11123220000. Its totient is φ = 11123219998.

The previous prime is 11123219993. The next prime is 11123220001. The reversal of 11123219999 is 99991232111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11123219999 - 2¹⁶ = 11123154463 is a prime.

Together with 11123220001, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11123219993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5561609999 + 5561610000.

It is an arithmetic number, because the mean of its divisors is an integer number (5561610000).

Almost surely, 2^11123219999 is an apocalyptic number.

11123219999 is a deficient number, since it is larger than the sum of its proper divisors (1).

11123219999 is an equidigital number, since it uses as much as digits as its factorization.

11123219999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 78732, while the sum is 47.

The spelling of 11123219999 in words is "eleven billion, one hundred twenty-three million, two hundred nineteen thousand, nine hundred ninety-nine".