10240221 has 32 divisors (see below), whose sum is σ = 15344640. Its totient is φ = 6044544.

The previous prime is 10240211. The next prime is 10240229. The reversal of 10240221 is 12204201.

10240221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10240221 - 2¹³ = 10232029 is a prime.

It is a super-2 number, since 2×10240221² = 209724252257682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10240197 and 10240206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10240229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95650 + ... + 95756.

It is an arithmetic number, because the mean of its divisors is an integer number (479520).

Almost surely, 2^10240221 is an apocalyptic number.

It is an amenable number.

10240221 is a deficient number, since it is larger than the sum of its proper divisors (5104419).

10240221 is a wasteful number, since it uses less digits than its factorization.

10240221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 10240221 is about 3200.0345310637. The cubic root of 10240221 is about 217.1549715202.

Adding to 10240221 its reverse (12204201), we get a palindrome (22444422).

The spelling of 10240221 in words is "ten million, two hundred forty thousand, two hundred twenty-one".