144241221 has 8 divisors (see below), whose sum is σ = 196794400. Its totient is φ = 93924432.

The previous prime is 144241219. The next prime is 144241241. The reversal of 144241221 is 122142441.

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

It is not a de Polignac number, because 144241221 - 2¹ = 144241219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144241241) 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, 558946 + ... + 559203.

It is an arithmetic number, because the mean of its divisors is an integer number (24599300).

Almost surely, 2^144241221 is an apocalyptic number.

It is an amenable number.

144241221 is a deficient number, since it is larger than the sum of its proper divisors (52553179).

144241221 is a wasteful number, since it uses less digits than its factorization.

144241221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118195.

The product of its digits is 512, while the sum is 21.

The square root of 144241221 is about 12010.0466693515. The cubic root of 144241221 is about 524.4407905044.

Adding to 144241221 its reverse (122142441), we get a palindrome (266383662).

The spelling of 144241221 in words is "one hundred forty-four million, two hundred forty-one thousand, two hundred twenty-one".