11223205305 has 16 divisors (see below), whose sum is σ = 19338446400. Its totient is φ = 5525270208.

The previous prime is 11223205297. The next prime is 11223205351. The reversal of 11223205305 is 50350232211.

It is a happy number.

It is not a de Polignac number, because 11223205305 - 2³ = 11223205297 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, 28777255 + ... + 28777644.

It is an arithmetic number, because the mean of its divisors is an integer number (1208652900).

Almost surely, 2^11223205305 is an apocalyptic number.

11223205305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11223205305 is a deficient number, since it is larger than the sum of its proper divisors (8115241095).

11223205305 is a wasteful number, since it uses less digits than its factorization.

11223205305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57554920.

The product of its (nonzero) digits is 1800, while the sum is 24.

Adding to 11223205305 its reverse (50350232211), we get a palindrome (61573437516).

The spelling of 11223205305 in words is "eleven billion, two hundred twenty-three million, two hundred five thousand, three hundred five".