21422240303 has 4 divisors (see below), whose sum is σ = 21422540880. Its totient is φ = 21421939728.

The previous prime is 21422240267. The next prime is 21422240317. The reversal of 21422240303 is 30304222412.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 21422240303 - 2²⁶ = 21355131439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21422240363) 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, 23963 + ... + 208371.

It is an arithmetic number, because the mean of its divisors is an integer number (5355635220).

Almost surely, 2^21422240303 is an apocalyptic number.

21422240303 is a deficient number, since it is larger than the sum of its proper divisors (300577).

21422240303 is a wasteful number, since it uses less digits than its factorization.

21422240303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300576.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 21422240303 its reverse (30304222412), we get a palindrome (51726462715).

The spelling of 21422240303 in words is "twenty-one billion, four hundred twenty-two million, two hundred forty thousand, three hundred three".