144221001 has 8 divisors (see below), whose sum is σ = 202415520. Its totient is φ = 91086912.

The previous prime is 144220997. The next prime is 144221027. The reversal of 144221001 is 100122441.

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

It is not a de Polignac number, because 144221001 - 2² = 144220997 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (144221041) 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 7 ways as a sum of consecutive naturals, for example, 1265040 + ... + 1265153.

It is an arithmetic number, because the mean of its divisors is an integer number (25301940).

Almost surely, 2^144221001 is an apocalyptic number.

It is an amenable number.

144221001 is a deficient number, since it is larger than the sum of its proper divisors (58194519).

144221001 is a wasteful number, since it uses less digits than its factorization.

144221001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2530215.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 144221001 is about 12009.2048446181. The cubic root of 144221001 is about 524.4162836673.

Adding to 144221001 its reverse (100122441), we get a palindrome (244343442).

The spelling of 144221001 in words is "one hundred forty-four million, two hundred twenty-one thousand, one".