4144131221 has 8 divisors (see below), whose sum is σ = 4176935424. Its totient is φ = 4111364320.

The previous prime is 4144131169. The next prime is 4144131227. The reversal of 4144131221 is 1221314414.

4144131221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 4144131221 - 2¹⁰ = 4144130197 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 (4144131227) 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, 239756 + ... + 256458.

It is an arithmetic number, because the mean of its divisors is an integer number (522116928).

Almost surely, 2^4144131221 is an apocalyptic number.

It is an amenable number.

4144131221 is a deficient number, since it is larger than the sum of its proper divisors (32804203).

4144131221 is a wasteful number, since it uses less digits than its factorization.

4144131221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18651.

The product of its digits is 768, while the sum is 23.

The square root of 4144131221 is about 64374.9269591819. The cubic root of 4144131221 is about 1606.2426973460.

Adding to 4144131221 its reverse (1221314414), we get a palindrome (5365445635).

The spelling of 4144131221 in words is "four billion, one hundred forty-four million, one hundred thirty-one thousand, two hundred twenty-one".