21020021212333 has 48 divisors (see below), whose sum is σ = 24925251870400. Its totient is φ = 17608497984000.

The previous prime is 21020021212321. The next prime is 21020021212349. The reversal of 21020021212333 is 33321212002012.

It is not a de Polignac number, because 21020021212333 - 2²⁹ = 21019484341421 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 (21020021216333) 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 47 ways as a sum of consecutive naturals, for example, 2461644778 + ... + 2461653316.

Almost surely, 2^{21020021212333} is an apocalyptic number.

It is an amenable number.

21020021212333 is a deficient number, since it is larger than the sum of its proper divisors (3905230658067).

21020021212333 is a wasteful number, since it uses less digits than its factorization.

21020021212333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11114 (or 11103 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21020021212333 its reverse (33321212002012), we get a palindrome (54341233214345).

The spelling of 21020021212333 in words is "twenty-one trillion, twenty billion, twenty-one million, two hundred twelve thousand, three hundred thirty-three".