4144143221 has 8 divisors (see below), whose sum is σ = 4186483104. Its totient is φ = 4101829200.

The previous prime is 4144143203. The next prime is 4144143233. The reversal of 4144143221 is 1223414414.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4144143221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4144143251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 609386 + ... + 616148.

It is an arithmetic number, because the mean of its divisors is an integer number (523310388).

Almost surely, 2^4144143221 is an apocalyptic number.

It is an amenable number.

4144143221 is a deficient number, since it is larger than the sum of its proper divisors (42339883).

4144143221 is a wasteful number, since it uses less digits than its factorization.

4144143221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12931.

The product of its digits is 3072, while the sum is 26.

The square root of 4144143221 is about 64375.0201631036. The cubic root of 4144143221 is about 1606.2442477227.

Adding to 4144143221 its reverse (1223414414), we get a palindrome (5367557635).

The spelling of 4144143221 in words is "four billion, one hundred forty-four million, one hundred forty-three thousand, two hundred twenty-one".