144432031221 has 12 divisors (see below), whose sum is σ = 213475767648. Its totient is φ = 94048764264.

The previous prime is 144432031187. The next prime is 144432031267. The reversal of 144432031221 is 122130234441.

144432031221 is a `hidden beast` number, since 1 + 4 + 4 + 4 + 320 + 312 + 21 = 666.

144432031221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 144432031221 - 2¹¹ = 144432029173 is a prime.

It is a super-2 number, since 2×144432031221² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144432031021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 186604305 + ... + 186605078.

It is an arithmetic number, because the mean of its divisors is an integer number (17789647304).

Almost surely, 2^144432031221 is an apocalyptic number.

It is an amenable number.

144432031221 is a deficient number, since it is larger than the sum of its proper divisors (69043736427).

144432031221 is a wasteful number, since it uses less digits than its factorization.

144432031221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373209432 (or 373209429 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 144432031221 its reverse (122130234441), we get a palindrome (266562265662).

The spelling of 144432031221 in words is "one hundred forty-four billion, four hundred thirty-two million, thirty-one thousand, two hundred twenty-one".