10221205 has 16 divisors (see below), whose sum is σ = 12579840. Its totient is φ = 7970688.

The previous prime is 10221203. The next prime is 10221247. The reversal of 10221205 is 50212201.

10221205 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 10221205 - 2¹ = 10221203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45724 + ... + 45946.

It is an arithmetic number, because the mean of its divisors is an integer number (786240).

Almost surely, 2^10221205 is an apocalyptic number.

It is an amenable number.

10221205 is a deficient number, since it is larger than the sum of its proper divisors (2358635).

10221205 is a wasteful number, since it uses less digits than its factorization.

10221205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 10221205 is about 3197.0619324624. The cubic root of 10221205 is about 217.0204699414.

Adding to 10221205 its reverse (50212201), we get a palindrome (60433406).

The spelling of 10221205 in words is "ten million, two hundred twenty-one thousand, two hundred five".