4401324433021 has 4 divisors (see below), whose sum is σ = 4401905626972. Its totient is φ = 4400743239072.

The previous prime is 4401324432983. The next prime is 4401324433039. The reversal of 4401324433021 is 1203344231044.

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 4350307176121 + 51017256900 = 2085739^2 + 225870^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4401324433021 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 (4401324433091) 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, 290585616 + ... + 290600761.

It is an arithmetic number, because the mean of its divisors is an integer number (1100476406743).

Almost surely, 2^{4401324433021} is an apocalyptic number.

It is an amenable number.

4401324433021 is a deficient number, since it is larger than the sum of its proper divisors (581193951).

4401324433021 is an equidigital number, since it uses as much as digits as its factorization.

4401324433021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581193950.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 4401324433021 its reverse (1203344231044), we get a palindrome (5604668664065).

The spelling of 4401324433021 in words is "four trillion, four hundred one billion, three hundred twenty-four million, four hundred thirty-three thousand, twenty-one".