11205202005 has 12 divisors (see below), whose sum is σ = 19422350220. Its totient is φ = 5976107712.

The previous prime is 11205201971. The next prime is 11205202013. The reversal of 11205202005 is 50020250211.

11205202005 is a `hidden beast` number, since 1 + 120 + 520 + 20 + 0 + 5 = 666.

11205202005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 5520192804 + 5685009201 = 74298^2 + 75399^2 .

It is not a de Polignac number, because 11205202005 - 2¹⁹ = 11204677717 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 124502200 + ... + 124502289.

It is an arithmetic number, because the mean of its divisors is an integer number (1618529185).

Almost surely, 2^11205202005 is an apocalyptic number.

11205202005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11205202005 is a deficient number, since it is larger than the sum of its proper divisors (8217148215).

11205202005 is a wasteful number, since it uses less digits than its factorization.

11205202005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249004500 (or 249004497 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

Adding to 11205202005 its reverse (50020250211), we get a palindrome (61225452216).

The spelling of 11205202005 in words is "eleven billion, two hundred five million, two hundred two thousand, five".