144022021 has 16 divisors (see below), whose sum is σ = 176561280. Its totient is φ = 115600320.

The previous prime is 144022013. The next prime is 144022049. The reversal of 144022021 is 120220441.

It is not a de Polignac number, because 144022021 - 2³ = 144022013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 144021986 and 144022004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144022051) 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, 18606 + ... + 25183.

It is an arithmetic number, because the mean of its divisors is an integer number (11035080).

Almost surely, 2^144022021 is an apocalyptic number.

144022021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

144022021 is a deficient number, since it is larger than the sum of its proper divisors (32539259).

144022021 is a wasteful number, since it uses less digits than its factorization.

144022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43836.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 144022021 is about 12000.9175065909. The cubic root of 144022021 is about 524.1749956958.

Adding to 144022021 its reverse (120220441), we get a palindrome (264242462).

The spelling of 144022021 in words is "one hundred forty-four million, twenty-two thousand, twenty-one".