441000111421 has 4 divisors (see below), whose sum is σ = 442829987644. Its totient is φ = 439170235200.

The previous prime is 441000111353. The next prime is 441000111467. The reversal of 441000111421 is 124111000144.

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

It can be written as a sum of positive squares in 2 ways, for example, as 130516012900 + 310484098521 = 361270^2 + 557211^2 .

It is a cyclic number.

It is not a de Polignac number, because 441000111421 - 2¹¹ = 441000109373 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 (441000171421) 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, 914937750 + ... + 914938231.

It is an arithmetic number, because the mean of its divisors is an integer number (110707496911).

Almost surely, 2^441000111421 is an apocalyptic number.

It is an amenable number.

441000111421 is a deficient number, since it is larger than the sum of its proper divisors (1829876223).

441000111421 is a wasteful number, since it uses less digits than its factorization.

441000111421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1829876222.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 441000111421 its reverse (124111000144), we get a palindrome (565111111565).

The spelling of 441000111421 in words is "four hundred forty-one billion, one hundred eleven thousand, four hundred twenty-one".