21033020302223 has 4 divisors (see below), whose sum is σ = 21034697455368. Its totient is φ = 21031343149080.

The previous prime is 21033020302183. The next prime is 21033020302319. The reversal of 21033020302223 is 32220302033012.

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 21033020302223 - 2¹² = 21033020298127 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 (21033020302523) 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 3 ways as a sum of consecutive naturals, for example, 838557761 + ... + 838582842.

It is an arithmetic number, because the mean of its divisors is an integer number (5258674363842).

Almost surely, 2^{21033020302223} is an apocalyptic number.

21033020302223 is a deficient number, since it is larger than the sum of its proper divisors (1677153145).

21033020302223 is a wasteful number, since it uses less digits than its factorization.

21033020302223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1677153144.

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 21033020302223 its reverse (32220302033012), we get a palindrome (53253322335235).

The spelling of 21033020302223 in words is "twenty-one trillion, thirty-three billion, twenty million, three hundred two thousand, two hundred twenty-three".