21233033213 has 8 divisors (see below), whose sum is σ = 24451563840. Its totient is φ = 18060812640.

The previous prime is 21233033147. The next prime is 21233033287. The reversal of 21233033213 is 31233033212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21233033213 - 2¹⁶ = 21232967677 is a prime.

It is a super-3 number, since 3×21233033213³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21233033413) 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 7 ways as a sum of consecutive naturals, for example, 11576528 + ... + 11578361.

It is an arithmetic number, because the mean of its divisors is an integer number (3056445480).

Almost surely, 2^21233033213 is an apocalyptic number.

It is an amenable number.

21233033213 is a deficient number, since it is larger than the sum of its proper divisors (3218530627).

21233033213 is a wasteful number, since it uses less digits than its factorization.

21233033213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23155027.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 21233033213 its reverse (31233033212), we get a palindrome (52466066425).

Subtracting 21233033213 from its reverse (31233033212), we obtain a palindrome (9999999999).

The spelling of 21233033213 in words is "twenty-one billion, two hundred thirty-three million, thirty-three thousand, two hundred thirteen".