21233320312 has 32 divisors (see below), whose sum is σ = 40033083600. Its totient is φ = 10557938944.

The previous prime is 21233320291. The next prime is 21233320349. The reversal of 21233320312 is 21302333212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1724514 + ... + 1736782.

Almost surely, 2^21233320312 is an apocalyptic number.

It is an amenable number.

21233320312 is a deficient number, since it is larger than the sum of its proper divisors (18799763288).

21233320312 is a wasteful number, since it uses less digits than its factorization.

21233320312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13455 (or 13451 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21233320312 its reverse (21302333212), we get a palindrome (42535653524).

The spelling of 21233320312 in words is "twenty-one billion, two hundred thirty-three million, three hundred twenty thousand, three hundred twelve".