11111030205 has 64 divisors (see below), whose sum is σ = 19595520000. Its totient is φ = 5331441920.

The previous prime is 11111030173. The next prime is 11111030207. The reversal of 11111030205 is 50203011111.

It is not a de Polignac number, because 11111030205 - 2⁵ = 11111030173 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111030207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7411546 + ... + 7413044.

It is an arithmetic number, because the mean of its divisors is an integer number (306180000).

Almost surely, 2^11111030205 is an apocalyptic number.

11111030205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11111030205 is a deficient number, since it is larger than the sum of its proper divisors (8484489795).

11111030205 is a wasteful number, since it uses less digits than its factorization.

11111030205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1954.

The product of its (nonzero) digits is 30, while the sum is 15.

Adding to 11111030205 its reverse (50203011111), we get a palindrome (61314041316).

The spelling of 11111030205 in words is "eleven billion, one hundred eleven million, thirty thousand, two hundred five".