21732196012 has 24 divisors (see below), whose sum is σ = 38204812800. Its totient is φ = 10816598736.

The previous prime is 21732196009. The next prime is 21732196027. The reversal of 21732196012 is 21069123712.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1527789 + ... + 1541947.

It is an arithmetic number, because the mean of its divisors is an integer number (1591867200).

Almost surely, 2^21732196012 is an apocalyptic number.

It is an amenable number.

21732196012 is a deficient number, since it is larger than the sum of its proper divisors (16472616788).

21732196012 is a wasteful number, since it uses less digits than its factorization.

21732196012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15885 (or 15883 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 34.

The spelling of 21732196012 in words is "twenty-one billion, seven hundred thirty-two million, one hundred ninety-six thousand, twelve".