21033302121303 has 16 divisors (see below), whose sum is σ = 30000198060000. Its totient is φ = 13061310713856.

The previous prime is 21033302121239. The next prime is 21033302121311. The reversal of 21033302121303 is 30312120333012.

It is not a de Polignac number, because 21033302121303 - 2⁶ = 21033302121239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21033302121103) 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 15 ways as a sum of consecutive naturals, for example, 2125859428 + ... + 2125869321.

It is an arithmetic number, because the mean of its divisors is an integer number (1875012378750).

Almost surely, 2^{21033302121303} is an apocalyptic number.

21033302121303 is a deficient number, since it is larger than the sum of its proper divisors (8966895938697).

21033302121303 is a wasteful number, since it uses less digits than its factorization.

21033302121303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4251728866.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 21033302121303 its reverse (30312120333012), we get a palindrome (51345422454315).

The spelling of 21033302121303 in words is "twenty-one trillion, thirty-three billion, three hundred two million, one hundred twenty-one thousand, three hundred three".