21404232203 has 8 divisors (see below), whose sum is σ = 22532275200. Its totient is φ = 20276339688.

The previous prime is 21404232197. The next prime is 21404232257. The reversal of 21404232203 is 30223240412.

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

It is a cyclic number.

It is not a de Polignac number, because 21404232203 - 2¹² = 21404228107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21404232103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 364850 + ... + 419432.

It is an arithmetic number, because the mean of its divisors is an integer number (2816534400).

Almost surely, 2^21404232203 is an apocalyptic number.

21404232203 is a deficient number, since it is larger than the sum of its proper divisors (1128042997).

21404232203 is a wasteful number, since it uses less digits than its factorization.

21404232203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75241.

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

Adding to 21404232203 its reverse (30223240412), we get a palindrome (51627472615).

The spelling of 21404232203 in words is "twenty-one billion, four hundred four million, two hundred thirty-two thousand, two hundred three".