21331320012332 has 96 divisors (see below), whose sum is σ = 42219060516864. Its totient is φ = 9342725414400.

The previous prime is 21331320012311. The next prime is 21331320012349. The reversal of 21331320012332 is 23321002313312.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 399040118 + ... + 399093570.

It is an arithmetic number, because the mean of its divisors is an integer number (439781880384).

Almost surely, 2^{21331320012332} is an apocalyptic number.

21331320012332 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21331320012332 is a deficient number, since it is larger than the sum of its proper divisors (20887740504532).

21331320012332 is a wasteful number, since it uses less digits than its factorization.

21331320012332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54759 (or 54757 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 21331320012332 its reverse (23321002313312), we get a palindrome (44652322325644).

The spelling of 21331320012332 in words is "twenty-one trillion, three hundred thirty-one billion, three hundred twenty million, twelve thousand, three hundred thirty-two".