11065525221 has 4 divisors (see below), whose sum is σ = 14754033632. Its totient is φ = 7377016812.

The previous prime is 11065525169. The next prime is 11065525249. The reversal of 11065525221 is 12252556011.

11065525221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 11065525221 - 2¹¹ = 11065523173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11065525921) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1844254201 + ... + 1844254206.

It is an arithmetic number, because the mean of its divisors is an integer number (3688508408).

Almost surely, 2^11065525221 is an apocalyptic number.

It is an amenable number.

11065525221 is a deficient number, since it is larger than the sum of its proper divisors (3688508411).

11065525221 is an equidigital number, since it uses as much as digits as its factorization.

11065525221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3688508410.

The product of its (nonzero) digits is 6000, while the sum is 30.

The spelling of 11065525221 in words is "eleven billion, sixty-five million, five hundred twenty-five thousand, two hundred twenty-one".