21225341 has 8 divisors (see below), whose sum is σ = 21942144. Its totient is φ = 20519680.

The previous prime is 21225329. The next prime is 21225349. The reversal of 21225341 is 14352212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21225341 - 2⁶ = 21225277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21225349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1181 + ... + 6621.

It is an arithmetic number, because the mean of its divisors is an integer number (2742768).

Almost surely, 2^21225341 is an apocalyptic number.

It is an amenable number.

21225341 is a deficient number, since it is larger than the sum of its proper divisors (716803).

21225341 is an equidigital number, since it uses as much as digits as its factorization.

21225341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5571.

The product of its digits is 480, while the sum is 20.

The square root of 21225341 is about 4607.0968081863. The cubic root of 21225341 is about 276.8757322056.

Adding to 21225341 its reverse (14352212), we get a palindrome (35577553).

The spelling of 21225341 in words is "twenty-one million, two hundred twenty-five thousand, three hundred forty-one".