21233201312 has 24 divisors (see below), whose sum is σ = 42511392000. Its totient is φ = 10436657344.

The previous prime is 21233201299. The next prime is 21233201321. The reversal of 21233201312 is 21310233212.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5621312 + ... + 5625087.

It is an arithmetic number, because the mean of its divisors is an integer number (1771308000).

Almost surely, 2^21233201312 is an apocalyptic number.

It is an amenable number.

21233201312 is an abundant number, since it is smaller than the sum of its proper divisors (21278190688).

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

21233201312 is a wasteful number, since it uses less digits than its factorization.

21233201312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11246468 (or 11246460 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21233201312 its reverse (21310233212), we get a palindrome (42543434524).

The spelling of 21233201312 in words is "twenty-one billion, two hundred thirty-three million, two hundred one thousand, three hundred twelve".