13111220320305 has 16 divisors (see below), whose sum is σ = 20982084592704. Its totient is φ = 6991273477440.

The previous prime is 13111220320259. The next prime is 13111220320333. The reversal of 13111220320305 is 50302302211131.

It is a happy number.

It is not a de Polignac number, because 13111220320305 - 2⁶ = 13111220320241 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86006311 + ... + 86158620.

It is an arithmetic number, because the mean of its divisors is an integer number (1311380287044).

Almost surely, 2^{13111220320305} is an apocalyptic number.

13111220320305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13111220320305 is a deficient number, since it is larger than the sum of its proper divisors (7870864272399).

13111220320305 is a wasteful number, since it uses less digits than its factorization.

13111220320305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172170016.

The product of its (nonzero) digits is 1080, while the sum is 24.

Adding to 13111220320305 its reverse (50302302211131), we get a palindrome (63413522531436).

The spelling of 13111220320305 in words is "thirteen trillion, one hundred eleven billion, two hundred twenty million, three hundred twenty thousand, three hundred five".