21223341 has 12 divisors (see below), whose sum is σ = 30707040. Its totient is φ = 14125320.

The previous prime is 21223333. The next prime is 21223357. The reversal of 21223341 is 14332212.

It is not a de Polignac number, because 21223341 - 2³ = 21223333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21223141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5056 + ... + 8246.

It is an arithmetic number, because the mean of its divisors is an integer number (2558920).

Almost surely, 2^21223341 is an apocalyptic number.

It is an amenable number.

21223341 is a deficient number, since it is larger than the sum of its proper divisors (9483699).

21223341 is a wasteful number, since it uses less digits than its factorization.

21223341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3936 (or 3933 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 21223341 is about 4606.8797466398. The cubic root of 21223341 is about 276.8670355435.

Adding to 21223341 its reverse (14332212), we get a palindrome (35555553).

The spelling of 21223341 in words is "twenty-one million, two hundred twenty-three thousand, three hundred forty-one".