4421111021443 has 4 divisors (see below), whose sum is σ = 4421134597288. Its totient is φ = 4421087445600.

The previous prime is 4421111021389. The next prime is 4421111021447. The reversal of 4421111021443 is 3441201111244.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4421111021443 - 2²¹ = 4421108924291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4421111021447) 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, 11504358 + ... + 11882443.

It is an arithmetic number, because the mean of its divisors is an integer number (1105283649322).

Almost surely, 2^{4421111021443} is an apocalyptic number.

4421111021443 is a deficient number, since it is larger than the sum of its proper divisors (23575845).

4421111021443 is a wasteful number, since it uses less digits than its factorization.

4421111021443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23575844.

The product of its (nonzero) digits is 3072, while the sum is 28.

Adding to 4421111021443 its reverse (3441201111244), we get a palindrome (7862312132687).

The spelling of 4421111021443 in words is "four trillion, four hundred twenty-one billion, one hundred eleven million, twenty-one thousand, four hundred forty-three".