10821331 has 2 divisors, whose sum is σ = 10821332. Its totient is φ = 10821330.

The previous prime is 10821329. The next prime is 10821347. The reversal of 10821331 is 13312801.

It is a weak prime.

It is an emirp because it is prime and its reverse (13312801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10821331 - 2¹ = 10821329 is a prime.

It is a super-2 number, since 2×10821331² = 234202409223122, which contains 22 as substring.

Together with 10821329, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 10821299 and 10821308.

It is not a weakly prime, because it can be changed into another prime (10821361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5410665 + 5410666.

It is an arithmetic number, because the mean of its divisors is an integer number (5410666).

Almost surely, 2^10821331 is an apocalyptic number.

10821331 is a deficient number, since it is larger than the sum of its proper divisors (1).

10821331 is an equidigital number, since it uses as much as digits as its factorization.

10821331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 10821331 is about 3289.5791524145. The cubic root of 10821331 is about 221.1873202807.

The spelling of 10821331 in words is "ten million, eight hundred twenty-one thousand, three hundred thirty-one".