21342100303 has 8 divisors (see below), whose sum is σ = 22467975920. Its totient is φ = 20216485440.

The previous prime is 21342100291. The next prime is 21342100313. The reversal of 21342100303 is 30300124312.

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 21342100303 - 2³³ = 12752165711 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21342100313) 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, 115723 + ... + 236803.

It is an arithmetic number, because the mean of its divisors is an integer number (2808496990).

Almost surely, 2^21342100303 is an apocalyptic number.

21342100303 is a deficient number, since it is larger than the sum of its proper divisors (1125875617).

21342100303 is a wasteful number, since it uses less digits than its factorization.

21342100303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130377.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21342100303 its reverse (30300124312), we get a palindrome (51642224615).

The spelling of 21342100303 in words is "twenty-one billion, three hundred forty-two million, one hundred thousand, three hundred three".