10221424 has 10 divisors (see below), whose sum is σ = 19804040. Its totient is φ = 5110704.

The previous prime is 10221397. The next prime is 10221443. The reversal of 10221424 is 42412201.

It is a Harshad number since it is a multiple of its sum of digits (16), and also a Moran number because the ratio is a prime number: 638839 = 10221424 / (1 + 0 + 2 + 2 + 1 + 4 + 2 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 10221398 and 10221407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 319404 + ... + 319435.

It is an arithmetic number, because the mean of its divisors is an integer number (1980404).

Almost surely, 2^10221424 is an apocalyptic number.

It is an amenable number.

10221424 is a deficient number, since it is larger than the sum of its proper divisors (9582616).

10221424 is an equidigital number, since it uses as much as digits as its factorization.

10221424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638847 (or 638841 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 10221424 is about 3197.0961824756. The cubic root of 10221424 is about 217.0220198938.

Adding to 10221424 its reverse (42412201), we get a palindrome (52633625).

The spelling of 10221424 in words is "ten million, two hundred twenty-one thousand, four hundred twenty-four".