24224002021 has 4 divisors (see below), whose sum is σ = 24400819692. Its totient is φ = 24047184352.

The previous prime is 24224001979. The next prime is 24224002037. The reversal of 24224002021 is 12020042242.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17398929025 + 6825072996 = 131905^2 + 82614^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-24224002021 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 24224002021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24224002421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88408630 + ... + 88408903.

It is an arithmetic number, because the mean of its divisors is an integer number (6100204923).

Almost surely, 2^24224002021 is an apocalyptic number.

It is an amenable number.

24224002021 is a deficient number, since it is larger than the sum of its proper divisors (176817671).

24224002021 is a wasteful number, since it uses less digits than its factorization.

24224002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176817670.

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 24224002021 its reverse (12020042242), we get a palindrome (36244044263).

The spelling of 24224002021 in words is "twenty-four billion, two hundred twenty-four million, two thousand, twenty-one".