21302020333 has 16 divisors (see below), whose sum is σ = 23571705600. Its totient is φ = 19088671680.

The previous prime is 21302020319. The next prime is 21302020409. The reversal of 21302020333 is 33302020312.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21302020333 - 2⁹ = 21302019821 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21302020333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21302027333) 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, 512703 + ... + 552691.

It is an arithmetic number, because the mean of its divisors is an integer number (1473231600).

Almost surely, 2^21302020333 is an apocalyptic number.

It is an amenable number.

21302020333 is a deficient number, since it is larger than the sum of its proper divisors (2269685267).

21302020333 is a wasteful number, since it uses less digits than its factorization.

21302020333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40692.

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 21302020333 its reverse (33302020312), we get a palindrome (54604040645).

The spelling of 21302020333 in words is "twenty-one billion, three hundred two million, twenty thousand, three hundred thirty-three".