21233013333 has 32 divisors (see below), whose sum is σ = 32523380736. Its totient is φ = 12070168128.

The previous prime is 21233013157. The next prime is 21233013337. The reversal of 21233013333 is 33331033212.

It is not a de Polignac number, because 21233013333 - 2²¹ = 21230916181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21233013337) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4708866 + ... + 4713372.

It is an arithmetic number, because the mean of its divisors is an integer number (1016355648).

Almost surely, 2^21233013333 is an apocalyptic number.

It is an amenable number.

21233013333 is a deficient number, since it is larger than the sum of its proper divisors (11290367403).

21233013333 is a wasteful number, since it uses less digits than its factorization.

21233013333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5633.

The product of its (nonzero) digits is 2916, while the sum is 24.

Adding to 21233013333 its reverse (33331033212), we get a palindrome (54564046545).

The spelling of 21233013333 in words is "twenty-one billion, two hundred thirty-three million, thirteen thousand, three hundred thirty-three".