21433312312 has 16 divisors (see below), whose sum is σ = 41934741840. Its totient is φ = 10250714496.

The previous prime is 21433312291. The next prime is 21433312321. The reversal of 21433312312 is 21321333412.

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 3 ways as a sum of consecutive naturals, for example, 58242513 + ... + 58242880.

It is an arithmetic number, because the mean of its divisors is an integer number (2620921365).

Almost surely, 2^21433312312 is an apocalyptic number.

It is an amenable number.

21433312312 is a deficient number, since it is larger than the sum of its proper divisors (20501429528).

21433312312 is a wasteful number, since it uses less digits than its factorization.

21433312312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116485422 (or 116485418 counting only the distinct ones).

The product of its digits is 2592, while the sum is 25.

Adding to 21433312312 its reverse (21321333412), we get a palindrome (42754645724).

The spelling of 21433312312 in words is "twenty-one billion, four hundred thirty-three million, three hundred twelve thousand, three hundred twelve".