21442303203 has 8 divisors (see below), whose sum is σ = 28867308288. Its totient is φ = 14156083464.

The previous prime is 21442303189. The next prime is 21442303217. The reversal of 21442303203 is 30230324412.

It is an interprime number because it is at equal distance from previous prime (21442303189) and next prime (21442303217).

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

It is not a de Polignac number, because 21442303203 - 2¹⁸ = 21442041059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21442301203) 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, 34695975 + ... + 34696592.

It is an arithmetic number, because the mean of its divisors is an integer number (3608413536).

Almost surely, 2^21442303203 is an apocalyptic number.

21442303203 is a deficient number, since it is larger than the sum of its proper divisors (7425005085).

21442303203 is a wasteful number, since it uses less digits than its factorization.

21442303203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69392673.

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 21442303203 its reverse (30230324412), we get a palindrome (51672627615).

The spelling of 21442303203 in words is "twenty-one billion, four hundred forty-two million, three hundred three thousand, two hundred three".