10340221 has 2 divisors, whose sum is σ = 10340222. Its totient is φ = 10340220.

The previous prime is 10340219. The next prime is 10340243. The reversal of 10340221 is 12204301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6320196 + 4020025 = 2514^2 + 2005^2 .

It is a cyclic number.

It is not a de Polignac number, because 10340221 - 2¹ = 10340219 is a prime.

Together with 10340219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10340201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5170110 + 5170111.

It is an arithmetic number, because the mean of its divisors is an integer number (5170111).

Almost surely, 2^10340221 is an apocalyptic number.

It is an amenable number.

10340221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10340221 is an equidigital number, since it uses as much as digits as its factorization.

10340221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 10340221 is about 3215.6214018444. The cubic root of 10340221 is about 217.8595523825.

Adding to 10340221 its reverse (12204301), we get a palindrome (22544522).

The spelling of 10340221 in words is "ten million, three hundred forty thousand, two hundred twenty-one".