4401221006503 has 2 divisors, whose sum is σ = 4401221006504. Its totient is φ = 4401221006502.

The previous prime is 4401221006467. The next prime is 4401221006543. The reversal of 4401221006503 is 3056001221044.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4401221006503 - 2¹⁷ = 4401220875431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4401221006543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2200610503251 + 2200610503252.

It is an arithmetic number, because the mean of its divisors is an integer number (2200610503252).

Almost surely, 2^{4401221006503} is an apocalyptic number.

4401221006503 is a deficient number, since it is larger than the sum of its proper divisors (1).

4401221006503 is an equidigital number, since it uses as much as digits as its factorization.

4401221006503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 4401221006503 its reverse (3056001221044), we get a palindrome (7457222227547).

The spelling of 4401221006503 in words is "four trillion, four hundred one billion, two hundred twenty-one million, six thousand, five hundred three".