21214341 has 12 divisors (see below), whose sum is σ = 31699980. Its totient is φ = 13655040.

The previous prime is 21214327. The next prime is 21214373. The reversal of 21214341 is 14341212.

It can be written as a sum of positive squares in 2 ways, for example, as 16892100 + 4322241 = 4110^2 + 2079^2 .

It is not a de Polignac number, because 21214341 - 2⁵ = 21214309 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21214321) 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 11 ways as a sum of consecutive naturals, for example, 40380 + ... + 40901.

It is an arithmetic number, because the mean of its divisors is an integer number (2641665).

Almost surely, 2^21214341 is an apocalyptic number.

It is an amenable number.

21214341 is a deficient number, since it is larger than the sum of its proper divisors (10485639).

21214341 is a wasteful number, since it uses less digits than its factorization.

21214341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81316 (or 81313 counting only the distinct ones).

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

The square root of 21214341 is about 4605.9028430917. The cubic root of 21214341 is about 276.8278938012.

Adding to 21214341 its reverse (14341212), we get a palindrome (35555553).

The spelling of 21214341 in words is "twenty-one million, two hundred fourteen thousand, three hundred forty-one".