10505030321 has 2 divisors, whose sum is σ = 10505030322. Its totient is φ = 10505030320.

The previous prime is 10505030243. The next prime is 10505030339. The reversal of 10505030321 is 12303050501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6515718400 + 3989311921 = 80720^2 + 63161^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10505030321 is a prime.

It is a super-2 number, since 2×10505030321² (a number of 21 digits) contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 10505030293 and 10505030302.

It is not a weakly prime, because it can be changed into another prime (10505030351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5252515160 + 5252515161.

It is an arithmetic number, because the mean of its divisors is an integer number (5252515161).

Almost surely, 2^10505030321 is an apocalyptic number.

It is an amenable number.

10505030321 is a deficient number, since it is larger than the sum of its proper divisors (1).

10505030321 is an equidigital number, since it uses as much as digits as its factorization.

10505030321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 450, while the sum is 20.

Adding to 10505030321 its reverse (12303050501), we get a palindrome (22808080822).

The spelling of 10505030321 in words is "ten billion, five hundred five million, thirty thousand, three hundred twenty-one".