144222321 has 16 divisors (see below), whose sum is σ = 195782400. Its totient is φ = 94418688.

The previous prime is 144222319. The next prime is 144222329. The reversal of 144222321 is 123222441.

It is not a de Polignac number, because 144222321 - 2¹ = 144222319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144222329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45145 + ... + 48233.

It is an arithmetic number, because the mean of its divisors is an integer number (12236400).

Almost surely, 2^144222321 is an apocalyptic number.

It is an amenable number.

144222321 is a deficient number, since it is larger than the sum of its proper divisors (51560079).

144222321 is a wasteful number, since it uses less digits than its factorization.

144222321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3368.

The product of its digits is 768, while the sum is 21.

The square root of 144222321 is about 12009.2598023359. The cubic root of 144222321 is about 524.4178835900.

Adding to 144222321 its reverse (123222441), we get a palindrome (267444762).

The spelling of 144222321 in words is "one hundred forty-four million, two hundred twenty-two thousand, three hundred twenty-one".