21233120334 has 16 divisors (see below), whose sum is σ = 42501614160. Its totient is φ = 7071811200.

The previous prime is 21233120333. The next prime is 21233120347. The reversal of 21233120334 is 43302133212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21233120333) 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 7 ways as a sum of consecutive naturals, for example, 1466089 + ... + 1480500.

It is an arithmetic number, because the mean of its divisors is an integer number (2656350885).

Almost surely, 2^21233120334 is an apocalyptic number.

21233120334 is an abundant number, since it is smaller than the sum of its proper divisors (21268493826).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21233120334 is a wasteful number, since it uses less digits than its factorization.

21233120334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2947795.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 21233120334 its reverse (43302133212), we get a palindrome (64535253546).

The spelling of 21233120334 in words is "twenty-one billion, two hundred thirty-three million, one hundred twenty thousand, three hundred thirty-four".