10320144421 has 8 divisors (see below), whose sum is σ = 10702647000. Its totient is φ = 9939417600.

The previous prime is 10320144397. The next prime is 10320144449. The reversal of 10320144421 is 12444102301.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5478072196 + 4842072225 = 74014^2 + 69585^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10320144421 - 2⁹ = 10320143909 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10320144392 and 10320144401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10320142421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 432096 + ... + 455353.

It is an arithmetic number, because the mean of its divisors is an integer number (1337830875).

Almost surely, 2^10320144421 is an apocalyptic number.

It is an amenable number.

10320144421 is a deficient number, since it is larger than the sum of its proper divisors (382502579).

10320144421 is an equidigital number, since it uses as much as digits as its factorization.

10320144421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887879.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 10320144421 its reverse (12444102301), we get a palindrome (22764246722).

The spelling of 10320144421 in words is "ten billion, three hundred twenty million, one hundred forty-four thousand, four hundred twenty-one".