10021247 has 2 divisors, whose sum is σ = 10021248. Its totient is φ = 10021246.

The previous prime is 10021243. The next prime is 10021259. The reversal of 10021247 is 74212001.

It is a weak prime.

It is an emirp because it is prime and its reverse (74212001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10021247 - 2² = 10021243 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10021241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010623 + 5010624.

It is an arithmetic number, because the mean of its divisors is an integer number (5010624).

Almost surely, 2^10021247 is an apocalyptic number.

10021247 is a deficient number, since it is larger than the sum of its proper divisors (1).

10021247 is an equidigital number, since it uses as much as digits as its factorization.

10021247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 10021247 is about 3165.6353232803. The cubic root of 10021247 is about 215.5959453115.

Adding to 10021247 its reverse (74212001), we get a palindrome (84233248).

The spelling of 10021247 in words is "ten million, twenty-one thousand, two hundred forty-seven".