11160221161 has 16 divisors (see below), whose sum is σ = 11923401600. Its totient is φ = 10420502400.

The previous prime is 11160221129. The next prime is 11160221209. The reversal of 11160221161 is 16112206111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11160221161 - 2⁵ = 11160221129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11160221461) 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 15 ways as a sum of consecutive naturals, for example, 3013611 + ... + 3017311.

It is an arithmetic number, because the mean of its divisors is an integer number (745212600).

Almost surely, 2^11160221161 is an apocalyptic number.

It is an amenable number.

11160221161 is a deficient number, since it is larger than the sum of its proper divisors (763180439).

11160221161 is a wasteful number, since it uses less digits than its factorization.

11160221161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6816.

The product of its (nonzero) digits is 144, while the sum is 22.

Adding to 11160221161 its reverse (16112206111), we get a palindrome (27272427272).

The spelling of 11160221161 in words is "eleven billion, one hundred sixty million, two hundred twenty-one thousand, one hundred sixty-one".