21236333103 has 24 divisors (see below), whose sum is σ = 30935224320. Its totient is φ = 14037500880.

The previous prime is 21236333099. The next prime is 21236333123. The reversal of 21236333103 is 30133363212.

It is a happy number.

21236333103 is a `hidden beast` number, since 2 + 1 + 23 + 633 + 3 + 1 + 0 + 3 = 666.

It is not a de Polignac number, because 21236333103 - 2² = 21236333099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21236333123) 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 23 ways as a sum of consecutive naturals, for example, 1500900 + ... + 1514982.

It is an arithmetic number, because the mean of its divisors is an integer number (1288967680).

Almost surely, 2^21236333103 is an apocalyptic number.

21236333103 is a deficient number, since it is larger than the sum of its proper divisors (9698891217).

21236333103 is a wasteful number, since it uses less digits than its factorization.

21236333103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15499 (or 15496 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 27.

Adding to 21236333103 its reverse (30133363212), we get a palindrome (51369696315).

The spelling of 21236333103 in words is "twenty-one billion, two hundred thirty-six million, three hundred thirty-three thousand, one hundred three".