10021213 has 2 divisors, whose sum is σ = 10021214. Its totient is φ = 10021212.

The previous prime is 10021163. The next prime is 10021217. The reversal of 10021213 is 31212001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6770404 + 3250809 = 2602^2 + 1803^2 .

It is an emirp because it is prime and its reverse (31212001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10021213 - 2²¹ = 7924061 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10021213.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10021217) 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, 5010606 + 5010607.

It is an arithmetic number, because the mean of its divisors is an integer number (5010607).

Almost surely, 2^10021213 is an apocalyptic number.

It is an amenable number.

10021213 is a deficient number, since it is larger than the sum of its proper divisors (1).

10021213 is an equidigital number, since it uses as much as digits as its factorization.

10021213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 10021213 is about 3165.6299531057. The cubic root of 10021213 is about 215.5957014872.

Adding to 10021213 its reverse (31212001), we get a palindrome (41233214).

The spelling of 10021213 in words is "ten million, twenty-one thousand, two hundred thirteen".