21232133203312 has 20 divisors (see below), whose sum is σ = 41138970810120. Its totient is φ = 10615624607168.

The previous prime is 21232133203217. The next prime is 21232133203339. The reversal of 21232133203312 is 21330233123212.

It is a happy number.

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, 27228178 + ... + 27997105.

It is an arithmetic number, because the mean of its divisors is an integer number (2056948540506).

Almost surely, 2^{21232133203312} is an apocalyptic number.

It is an amenable number.

21232133203312 is a deficient number, since it is larger than the sum of its proper divisors (19906837606808).

21232133203312 is a wasteful number, since it uses less digits than its factorization.

21232133203312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55249320 (or 55249314 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 21232133203312 its reverse (21330233123212), we get a palindrome (42562366326524).

The spelling of 21232133203312 in words is "twenty-one trillion, two hundred thirty-two billion, one hundred thirty-three million, two hundred three thousand, three hundred twelve".