21233041 has 4 divisors (see below), whose sum is σ = 21302512. Its totient is φ = 21163572.

The previous prime is 21233029. The next prime is 21233059. The reversal of 21233041 is 14033212.

It is a happy number.

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 21233041 - 2¹³ = 21224849 is a prime.

It is a super-4 number, since 4×21233041⁴ (a number of 30 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21233011) 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, 34275 + ... + 34888.

It is an arithmetic number, because the mean of its divisors is an integer number (5325628).

Almost surely, 2^21233041 is an apocalyptic number.

It is an amenable number.

21233041 is a deficient number, since it is larger than the sum of its proper divisors (69471).

21233041 is an equidigital number, since it uses as much as digits as its factorization.

21233041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69470.

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

The square root of 21233041 is about 4607.9323996778. The cubic root of 21233041 is about 276.9092092553.

Adding to 21233041 its reverse (14033212), we get a palindrome (35266253).

The spelling of 21233041 in words is "twenty-one million, two hundred thirty-three thousand, forty-one".