10440331444421 has 2 divisors, whose sum is σ = 10440331444422. Its totient is φ = 10440331444420.

The previous prime is 10440331444399. The next prime is 10440331444423. The reversal of 10440331444421 is 12444413304401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5714538060100 + 4725793384321 = 2390510^2 + 2173889^2 .

It is a cyclic number.

It is not a de Polignac number, because 10440331444421 - 2³⁰ = 10439257702597 is a prime.

Together with 10440331444423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10440331444423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5220165722210 + 5220165722211.

It is an arithmetic number, because the mean of its divisors is an integer number (5220165722211).

Almost surely, 2^{10440331444421} is an apocalyptic number.

It is an amenable number.

10440331444421 is a deficient number, since it is larger than the sum of its proper divisors (1).

10440331444421 is an equidigital number, since it uses as much as digits as its factorization.

10440331444421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 73728, while the sum is 35.

Adding to 10440331444421 its reverse (12444413304401), we get a palindrome (22884744748822).

The spelling of 10440331444421 in words is "ten trillion, four hundred forty billion, three hundred thirty-one million, four hundred forty-four thousand, four hundred twenty-one".