221229248185 has 16 divisors (see below), whose sum is σ = 299595723840. Its totient is φ = 155345928640.

The previous prime is 221229248173. The next prime is 221229248263. The reversal of 221229248185 is 581842922122.

221229248185 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-221229248185 is a prime.

It is an unprimeable number.

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, 69349267 + ... + 69352456.

It is an arithmetic number, because the mean of its divisors is an integer number (18724732740).

Almost surely, 2^221229248185 is an apocalyptic number.

It is an amenable number.

221229248185 is a deficient number, since it is larger than the sum of its proper divisors (78366475655).

221229248185 is a wasteful number, since it uses less digits than its factorization.

221229248185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138701768.

The product of its digits is 368640, while the sum is 46.

The spelling of 221229248185 in words is "two hundred twenty-one billion, two hundred twenty-nine million, two hundred forty-eight thousand, one hundred eighty-five".