221323110202144 has 24 divisors (see below), whose sum is σ = 436156641025308. Its totient is φ = 110553169624320.

The previous prime is 221323110202127. The next prime is 221323110202189. The reversal of 221323110202144 is 441202011323122.

It can be written as a sum of positive squares in 2 ways, for example, as 221317393027600 + 5717174544 = 14876740^2 + 75612^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3387012967 + ... + 3387078310.

Almost surely, 2^{221323110202144} is an apocalyptic number.

It is an amenable number.

221323110202144 is a deficient number, since it is larger than the sum of its proper divisors (214833530823164).

221323110202144 is a wasteful number, since it uses less digits than its factorization.

221323110202144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6774092308 (or 6774092300 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 221323110202144 its reverse (441202011323122), we get a palindrome (662525121525266).

The spelling of 221323110202144 in words is "two hundred twenty-one trillion, three hundred twenty-three billion, one hundred ten million, two hundred two thousand, one hundred forty-four".