10813021 has 2 divisors, whose sum is σ = 10813022. Its totient is φ = 10813020.

The previous prime is 10813001. The next prime is 10813039. The reversal of 10813021 is 12031801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6832996 + 3980025 = 2614^2 + 1995^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10813021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10812986 and 10813004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10813001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5406510 + 5406511.

It is an arithmetic number, because the mean of its divisors is an integer number (5406511).

Almost surely, 2^10813021 is an apocalyptic number.

It is an amenable number.

10813021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10813021 is an equidigital number, since it uses as much as digits as its factorization.

10813021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 10813021 is about 3288.3158303302. The cubic root of 10813021 is about 221.1306871570.

Adding to 10813021 its reverse (12031801), we get a palindrome (22844822).

The spelling of 10813021 in words is "ten million, eight hundred thirteen thousand, twenty-one".