10103323421 has 2 divisors, whose sum is σ = 10103323422. Its totient is φ = 10103323420.

The previous prime is 10103323403. The next prime is 10103323441. The reversal of 10103323421 is 12432330101.

It is an a-pointer prime, because the next prime (10103323441) can be obtained adding 10103323421 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6990799321 + 3112524100 = 83611^2 + 55790^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10103323421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10103323393 and 10103323402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10103323441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5051661710 + 5051661711.

It is an arithmetic number, because the mean of its divisors is an integer number (5051661711).

Almost surely, 2^10103323421 is an apocalyptic number.

It is an amenable number.

10103323421 is a deficient number, since it is larger than the sum of its proper divisors (1).

10103323421 is an equidigital number, since it uses as much as digits as its factorization.

10103323421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 10103323421 its reverse (12432330101), we get a palindrome (22535653522).

The spelling of 10103323421 in words is "ten billion, one hundred three million, three hundred twenty-three thousand, four hundred twenty-one".