10390221 has 16 divisors (see below), whose sum is σ = 15451200. Its totient is φ = 6900624.

The previous prime is 10390201. The next prime is 10390231. The reversal of 10390221 is 12209301.

It is a happy number.

10390221 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 10390221 - 2⁶ = 10390157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10390194 and 10390203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10390201) 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 in 15 ways as a sum of consecutive naturals, for example, 8815 + ... + 9923.

It is an arithmetic number, because the mean of its divisors is an integer number (965700).

Almost surely, 2^10390221 is an apocalyptic number.

It is an amenable number.

10390221 is a deficient number, since it is larger than the sum of its proper divisors (5060979).

10390221 is a wasteful number, since it uses less digits than its factorization.

10390221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1465 (or 1459 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 10390221 is about 3223.3865731556. The cubic root of 10390221 is about 218.2101402154.

Adding to 10390221 its reverse (12209301), we get a palindrome (22599522).

The spelling of 10390221 in words is "ten million, three hundred ninety thousand, two hundred twenty-one".