21331322010012 has 96 divisors (see below), whose sum is σ = 59448467054592. Its totient is φ = 5820667402176.

The previous prime is 21331322010001. The next prime is 21331322010049. The reversal of 21331322010012 is 21001022313312.

21331322010012 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

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, 7282498 + ... + 9782505.

It is an arithmetic number, because the mean of its divisors is an integer number (619254865152).

Almost surely, 2^{21331322010012} is an apocalyptic number.

It is an amenable number.

21331322010012 is an abundant number, since it is smaller than the sum of its proper divisors (38117145044580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21331322010012 is a wasteful number, since it uses less digits than its factorization.

21331322010012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17065687 (or 17065685 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21331322010012 its reverse (21001022313312), we get a palindrome (42332344323324).

The spelling of 21331322010012 in words is "twenty-one trillion, three hundred thirty-one billion, three hundred twenty-two million, ten thousand, twelve".