21232041 has 4 divisors (see below), whose sum is σ = 28309392. Its totient is φ = 14154692.

The previous prime is 21232033. The next prime is 21232049. The reversal of 21232041 is 14023212.

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 an interprime number because it is at equal distance from previous prime (21232033) and next prime (21232049).

It is a cyclic number.

It is not a de Polignac number, because 21232041 - 2³ = 21232033 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21232041.

It is not an unprimeable number, because it can be changed into a prime (21232049) 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, 3538671 + ... + 3538676.

It is an arithmetic number, because the mean of its divisors is an integer number (7077348).

Almost surely, 2^21232041 is an apocalyptic number.

It is an amenable number.

21232041 is a deficient number, since it is larger than the sum of its proper divisors (7077351).

21232041 is an equidigital number, since it uses as much as digits as its factorization.

21232041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7077350.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 21232041 is about 4607.8238898638. The cubic root of 21232041 is about 276.9048620439.

Adding to 21232041 its reverse (14023212), we get a palindrome (35255253).

The spelling of 21232041 in words is "twenty-one million, two hundred thirty-two thousand, forty-one".