144432002221 has 4 divisors (see below), whose sum is σ = 155542156252. Its totient is φ = 133321848192.

The previous prime is 144432002219. The next prime is 144432002303. The reversal of 144432002221 is 122200234441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122200234441 = 743 ⋅164468687.

It can be written as a sum of positive squares in 2 ways, for example, as 90368776996 + 54063225225 = 300614^2 + 232515^2 .

It is not a de Polignac number, because 144432002221 - 2¹ = 144432002219 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 (144432002621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5555076996 + ... + 5555077021.

It is an arithmetic number, because the mean of its divisors is an integer number (38885539063).

Almost surely, 2^144432002221 is an apocalyptic number.

It is an amenable number.

144432002221 is a deficient number, since it is larger than the sum of its proper divisors (11110154031).

144432002221 is a wasteful number, since it uses less digits than its factorization.

144432002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11110154030.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 144432002221 its reverse (122200234441), we get a palindrome (266632236662).

The spelling of 144432002221 in words is "one hundred forty-four billion, four hundred thirty-two million, two thousand, two hundred twenty-one".