21241033 has 8 divisors (see below), whose sum is σ = 23208480. Its totient is φ = 19279680.

The previous prime is 21241013. The next prime is 21241037. The reversal of 21241033 is 33014212.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21241033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21240998 and 21241016.

It is not an unprimeable number, because it can be changed into a prime (21241037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8913 + ... + 11041.

It is an arithmetic number, because the mean of its divisors is an integer number (2901060).

Almost surely, 2^21241033 is an apocalyptic number.

It is an amenable number.

21241033 is a deficient number, since it is larger than the sum of its proper divisors (1967447).

21241033 is a wasteful number, since it uses less digits than its factorization.

21241033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3047.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 21241033 is about 4608.7995183128. The cubic root of 21241033 is about 276.9439472657.

Adding to 21241033 its reverse (33014212), we get a palindrome (54255245).

The spelling of 21241033 in words is "twenty-one million, two hundred forty-one thousand, thirty-three".