21033312230332 has 12 divisors (see below), whose sum is σ = 36808360536136. Its totient is φ = 10516637791440.

The previous prime is 21033312230311. The next prime is 21033312230383. The reversal of 21033312230332 is 23303221333012.

It is a self number, because there is not a number n which added to its sum of digits gives 21033312230332.

It is a congruent number.

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, 1812294 + ... + 6734317.

Almost surely, 2^{21033312230332} is an apocalyptic number.

It is an amenable number.

21033312230332 is a deficient number, since it is larger than the sum of its proper divisors (15775048305804).

21033312230332 is a wasteful number, since it uses less digits than its factorization.

21033312230332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9161868 (or 9161866 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 28.

Adding to 21033312230332 its reverse (23303221333012), we get a palindrome (44336533563344).

The spelling of 21033312230332 in words is "twenty-one trillion, thirty-three billion, three hundred twelve million, two hundred thirty thousand, three hundred thirty-two".