11169645221 has 8 divisors (see below), whose sum is σ = 12765987840. Its totient is φ = 9573472368.

The previous prime is 11169645203. The next prime is 11169645259. The reversal of 11169645221 is 12254696111.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11169645221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11169645271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168380 + ... + 225146.

It is an arithmetic number, because the mean of its divisors is an integer number (1595748480).

Almost surely, 2^11169645221 is an apocalyptic number.

It is an amenable number.

11169645221 is a deficient number, since it is larger than the sum of its proper divisors (1596342619).

11169645221 is an equidigital number, since it uses as much as digits as its factorization.

11169645221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84883.

The product of its digits is 25920, while the sum is 38.

The spelling of 11169645221 in words is "eleven billion, one hundred sixty-nine million, six hundred forty-five thousand, two hundred twenty-one".