144421421133 has 64 divisors (see below), whose sum is σ = 218656143360. Its totient is φ = 84044083200.

The previous prime is 144421421117. The next prime is 144421421149. The reversal of 144421421133 is 331124124441.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (144421421117) and next prime (144421421149).

It is not a de Polignac number, because 144421421133 - 2⁴ = 144421421117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 144421421133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144421421153) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13966141 + ... + 13976477.

It is an arithmetic number, because the mean of its divisors is an integer number (3416502240).

Almost surely, 2^144421421133 is an apocalyptic number.

It is an amenable number.

144421421133 is a deficient number, since it is larger than the sum of its proper divisors (74234722227).

144421421133 is a wasteful number, since it uses less digits than its factorization.

144421421133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10578.

The product of its digits is 9216, while the sum is 30.

Adding to 144421421133 its reverse (331124124441), we get a palindrome (475545545574).

The spelling of 144421421133 in words is "one hundred forty-four billion, four hundred twenty-one million, four hundred twenty-one thousand, one hundred thirty-three".