21332000012 has 6 divisors (see below), whose sum is σ = 37331000028. Its totient is φ = 10666000004.

The previous prime is 21331999999. The next prime is 21332000083. The reversal of 21332000012 is 21000023312.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2666499998 + ... + 2666500005.

It is an arithmetic number, because the mean of its divisors is an integer number (6221833338).

Almost surely, 2^21332000012 is an apocalyptic number.

It is an amenable number.

21332000012 is a deficient number, since it is larger than the sum of its proper divisors (15999000016).

21332000012 is a wasteful number, since it uses less digits than its factorization.

21332000012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5333000007 (or 5333000005 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 21332000012 its reverse (21000023312), we get a palindrome (42332023324).

The spelling of 21332000012 in words is "twenty-one billion, three hundred thirty-two million, twelve", and thus it is an aban number.