21341441 has 4 divisors (see below), whose sum is σ = 23281584. Its totient is φ = 19401300.

The previous prime is 21341407. The next prime is 21341479. The reversal of 21341441 is 14414312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21341441 - 2⁶ = 21341377 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21341491) 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, 970055 + ... + 970076.

It is an arithmetic number, because the mean of its divisors is an integer number (5820396).

Almost surely, 2^21341441 is an apocalyptic number.

It is an amenable number.

21341441 is a deficient number, since it is larger than the sum of its proper divisors (1940143).

21341441 is a wasteful number, since it uses less digits than its factorization.

21341441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1940142.

The product of its digits is 384, while the sum is 20.

The square root of 21341441 is about 4619.6797508052. The cubic root of 21341441 is about 277.3796399283.

Adding to 21341441 its reverse (14414312), we get a palindrome (35755753).

The spelling of 21341441 in words is "twenty-one million, three hundred forty-one thousand, four hundred forty-one".