221432144023316 has 48 divisors (see below), whose sum is σ = 398163676646736. Its totient is φ = 107708351422464.

The previous prime is 221432144023241. The next prime is 221432144023403. The reversal of 221432144023316 is 613320441234122.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 100653143020816 + 120779001002500 = 10032604^2 + 10989950^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 221432144023316.

It is a congruent number.

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, 20442620 + ... + 29338796.

It is an arithmetic number, because the mean of its divisors is an integer number (8295076596807).

Almost surely, 2^{221432144023316} is an apocalyptic number.

It is an amenable number.

221432144023316 is a deficient number, since it is larger than the sum of its proper divisors (176731532623420).

221432144023316 is a wasteful number, since it uses less digits than its factorization.

221432144023316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8897228 (or 8897226 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 38.

Adding to 221432144023316 its reverse (613320441234122), we get a palindrome (834752585257438).

The spelling of 221432144023316 in words is "two hundred twenty-one trillion, four hundred thirty-two billion, one hundred forty-four million, twenty-three thousand, three hundred sixteen".