144304221 has 8 divisors (see below), whose sum is σ = 202532320. Its totient is φ = 91139472.

The previous prime is 144304201. The next prime is 144304267. The reversal of 144304221 is 122403441.

144304221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 144304221 - 2¹⁴ = 144287837 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 (144304201) 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, 1265770 + ... + 1265883.

It is an arithmetic number, because the mean of its divisors is an integer number (25316540).

Almost surely, 2^144304221 is an apocalyptic number.

It is an amenable number.

144304221 is a deficient number, since it is larger than the sum of its proper divisors (58228099).

144304221 is a wasteful number, since it uses less digits than its factorization.

144304221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2531675.

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

The square root of 144304221 is about 12012.6691871540. The cubic root of 144304221 is about 524.5171324370.

Adding to 144304221 its reverse (122403441), we get a palindrome (266707662).

The spelling of 144304221 in words is "one hundred forty-four million, three hundred four thousand, two hundred twenty-one".