4421143222021 has 4 divisors (see below), whose sum is σ = 4563760745344. Its totient is φ = 4278525698700.

The previous prime is 4421143222007. The next prime is 4421143222039. The reversal of 4421143222021 is 1202223411244.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4421143222021 - 2¹⁹ = 4421142697733 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 (4421143226021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71308761615 + ... + 71308761676.

It is an arithmetic number, because the mean of its divisors is an integer number (1140940186336).

Almost surely, 2^{4421143222021} is an apocalyptic number.

It is an amenable number.

4421143222021 is a deficient number, since it is larger than the sum of its proper divisors (142617523323).

4421143222021 is a wasteful number, since it uses less digits than its factorization.

4421143222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142617523322.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 4421143222021 its reverse (1202223411244), we get a palindrome (5623366633265).

The spelling of 4421143222021 in words is "four trillion, four hundred twenty-one billion, one hundred forty-three million, two hundred twenty-two thousand, twenty-one".