11131121105 has 8 divisors (see below), whose sum is σ = 14384833512. Its totient is φ = 8219904768.

The previous prime is 11131121021. The next prime is 11131121129. The reversal of 11131121105 is 50112113111.

It can be written as a sum of positive squares in 4 ways, for example, as 696907201 + 10434213904 = 26399^2 + 102148^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11131121105 - 2¹⁶ = 11131055569 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85623944 + ... + 85624073.

It is an arithmetic number, because the mean of its divisors is an integer number (1798104189).

Almost surely, 2^11131121105 is an apocalyptic number.

It is an amenable number.

11131121105 is a deficient number, since it is larger than the sum of its proper divisors (3253712407).

11131121105 is a wasteful number, since it uses less digits than its factorization.

11131121105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171248035.

The product of its (nonzero) digits is 30, while the sum is 17.

Adding to 11131121105 its reverse (50112113111), we get a palindrome (61243234216).

The spelling of 11131121105 in words is "eleven billion, one hundred thirty-one million, one hundred twenty-one thousand, one hundred five".