21321230033303 has 4 divisors (see below), whose sum is σ = 22575420035280. Its totient is φ = 20067040031328.

The previous prime is 21321230033297. The next prime is 21321230033329. The reversal of 21321230033303 is 30333003212312.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21321230033303 - 2³⁶ = 21252510556567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21321230033203) 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 3 ways as a sum of consecutive naturals, for example, 627095000963 + ... + 627095000996.

It is an arithmetic number, because the mean of its divisors is an integer number (5643855008820).

Almost surely, 2^{21321230033303} is an apocalyptic number.

21321230033303 is a deficient number, since it is larger than the sum of its proper divisors (1254190001977).

21321230033303 is a wasteful number, since it uses less digits than its factorization.

21321230033303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254190001976.

The product of its (nonzero) digits is 5832, while the sum is 26.

Adding to 21321230033303 its reverse (30333003212312), we get a palindrome (51654233245615).

The spelling of 21321230033303 in words is "twenty-one trillion, three hundred twenty-one billion, two hundred thirty million, thirty-three thousand, three hundred three".