10222621 has 4 divisors (see below), whose sum is σ = 10241532. Its totient is φ = 10203712.

The previous prime is 10222609. The next prime is 10222657. The reversal of 10222621 is 12622201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 525625 + 9696996 = 725^2 + 3114^2 .

It is a cyclic number.

It is not a de Polignac number, because 10222621 - 2¹⁹ = 9698333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10222595 and 10222604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10222601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8620 + ... + 9733.

It is an arithmetic number, because the mean of its divisors is an integer number (2560383).

Almost surely, 2^10222621 is an apocalyptic number.

It is an amenable number.

10222621 is a deficient number, since it is larger than the sum of its proper divisors (18911).

10222621 is an equidigital number, since it uses as much as digits as its factorization.

10222621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18910.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 10222621 is about 3197.2833781196. The cubic root of 10222621 is about 217.0304911602.

Adding to 10222621 its reverse (12622201), we get a palindrome (22844822).

The spelling of 10222621 in words is "ten million, two hundred twenty-two thousand, six hundred twenty-one".