10221293 has 2 divisors, whose sum is σ = 10221294. Its totient is φ = 10221292.

The previous prime is 10221283. The next prime is 10221347. The reversal of 10221293 is 39212201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10220809 + 484 = 3197^2 + 22^2 .

It is a cyclic number.

It is not a de Polignac number, because 10221293 - 2⁸ = 10221037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10221203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110646 + 5110647.

It is an arithmetic number, because the mean of its divisors is an integer number (5110647).

Almost surely, 2^10221293 is an apocalyptic number.

It is an amenable number.

10221293 is a deficient number, since it is larger than the sum of its proper divisors (1).

10221293 is an equidigital number, since it uses as much as digits as its factorization.

10221293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 10221293 is about 3197.0756950689. The cubic root of 10221293 is about 217.0210927560.

Adding to 10221293 its reverse (39212201), we get a palindrome (49433494).

The spelling of 10221293 in words is "ten million, two hundred twenty-one thousand, two hundred ninety-three".