4443530121221 has 16 divisors (see below), whose sum is σ = 4460577206400. Its totient is φ = 4426523102208.

The previous prime is 4443530121187. The next prime is 4443530121253. The reversal of 4443530121221 is 1221210353444.

4443530121221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4443530121221 - 2²⁶ = 4443463012357 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 (4443530121521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1228510805 + ... + 1228514421.

It is an arithmetic number, because the mean of its divisors is an integer number (278786075400).

Almost surely, 2^{4443530121221} is an apocalyptic number.

It is an amenable number.

4443530121221 is a deficient number, since it is larger than the sum of its proper divisors (17047085179).

4443530121221 is a wasteful number, since it uses less digits than its factorization.

4443530121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7948.

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 4443530121221 its reverse (1221210353444), we get a palindrome (5664740474665).

The spelling of 4443530121221 in words is "four trillion, four hundred forty-three billion, five hundred thirty million, one hundred twenty-one thousand, two hundred twenty-one".