21314241 has 24 divisors (see below), whose sum is σ = 33662720. Its totient is φ = 12915936.

The previous prime is 21314233. The next prime is 21314269. The reversal of 21314241 is 14241312.

It is not a de Polignac number, because 21314241 - 2³ = 21314233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21314221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6480 + ... + 9198.

Almost surely, 2^21314241 is an apocalyptic number.

It is an amenable number.

21314241 is a deficient number, since it is larger than the sum of its proper divisors (12348479).

21314241 is a wasteful number, since it uses less digits than its factorization.

21314241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2805 (or 2802 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 21314241 is about 4616.7348851759. The cubic root of 21314241 is about 277.2617482676.

Adding to 21314241 its reverse (14241312), we get a palindrome (35555553).

The spelling of 21314241 in words is "twenty-one million, three hundred fourteen thousand, two hundred forty-one".