11131205330205 has 48 divisors (see below), whose sum is σ = 19760084023680. Its totient is φ = 5794745673600.

The previous prime is 11131205330107. The next prime is 11131205330207. The reversal of 11131205330205 is 50203350213111.

11131205330205 is a `hidden beast` number, since 1 + 1 + 1 + 3 + 120 + 5 + 330 + 205 = 666.

It is not a de Polignac number, because 11131205330205 - 2⁸ = 11131205329949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11131205330207) 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 in 47 ways as a sum of consecutive naturals, for example, 15117825 + ... + 15837014.

It is an arithmetic number, because the mean of its divisors is an integer number (411668417160).

Almost surely, 2^{11131205330205} is an apocalyptic number.

11131205330205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11131205330205 is a deficient number, since it is larger than the sum of its proper divisors (8628878693475).

11131205330205 is a wasteful number, since it uses less digits than its factorization.

11131205330205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30955042 (or 30955039 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

Adding to 11131205330205 its reverse (50203350213111), we get a palindrome (61334555543316).

The spelling of 11131205330205 in words is "eleven trillion, one hundred thirty-one billion, two hundred five million, three hundred thirty thousand, two hundred five".