21033322333 has 16 divisors (see below), whose sum is σ = 22282286400. Its totient is φ = 19820021760.

The previous prime is 21033322291. The next prime is 21033322393. The reversal of 21033322333 is 33322333012.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21033322333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21033322298 and 21033322307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21033322393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1751038 + ... + 1763008.

It is an arithmetic number, because the mean of its divisors is an integer number (1392642900).

Almost surely, 2^21033322333 is an apocalyptic number.

It is an amenable number.

21033322333 is a deficient number, since it is larger than the sum of its proper divisors (1248964067).

21033322333 is a wasteful number, since it uses less digits than its factorization.

21033322333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13452.

The product of its (nonzero) digits is 5832, while the sum is 25.

Adding to 21033322333 its reverse (33322333012), we get a palindrome (54355655345).

The spelling of 21033322333 in words is "twenty-one billion, thirty-three million, three hundred twenty-two thousand, three hundred thirty-three".