21404233203 has 8 divisors (see below), whose sum is σ = 29523080400. Its totient is φ = 13777437408.

The previous prime is 21404233133. The next prime is 21404233271. The reversal of 21404233203 is 30233240412.

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

It is not a de Polignac number, because 21404233203 - 2¹⁶ = 21404167667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21404233273) 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 7 ways as a sum of consecutive naturals, for example, 123012748 + ... + 123012921.

It is an arithmetic number, because the mean of its divisors is an integer number (3690385050).

Almost surely, 2^21404233203 is an apocalyptic number.

21404233203 is a deficient number, since it is larger than the sum of its proper divisors (8118847197).

21404233203 is a wasteful number, since it uses less digits than its factorization.

21404233203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246025701.

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

Adding to 21404233203 its reverse (30233240412), we get a palindrome (51637473615).

The spelling of 21404233203 in words is "twenty-one billion, four hundred four million, two hundred thirty-three thousand, two hundred three".