21321102000012 has 48 divisors (see below), whose sum is σ = 49813525233024. Its totient is φ = 7097851152000.

The previous prime is 21321102000007. The next prime is 21321102000061. The reversal of 21321102000012 is 21000020112312.

It is a junction number, because it is equal to n+sod(n) for n = 21321101999955 and 21321102000000.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194692312 + ... + 194801792.

It is an arithmetic number, because the mean of its divisors is an integer number (1037781775688).

Almost surely, 2^{21321102000012} is an apocalyptic number.

It is an amenable number.

21321102000012 is an abundant number, since it is smaller than the sum of its proper divisors (28492423233012).

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

21321102000012 is a wasteful number, since it uses less digits than its factorization.

21321102000012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130310 (or 130308 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21321102000012 its reverse (21000020112312), we get a palindrome (42321122112324).

The spelling of 21321102000012 in words is "twenty-one trillion, three hundred twenty-one billion, one hundred two million, twelve", and thus it is an aban number.