21043330130312 has 32 divisors (see below), whose sum is σ = 45093154912320. Its totient is φ = 9018509129280.

The previous prime is 21043330130293. The next prime is 21043330130413. The reversal of 21043330130312 is 21303103334012.

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, 7648487 + ... + 10029257.

It is an arithmetic number, because the mean of its divisors is an integer number (1409161091010).

Almost surely, 2^{21043330130312} is an apocalyptic number.

It is an amenable number.

21043330130312 is an abundant number, since it is smaller than the sum of its proper divisors (24049824782008).

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

21043330130312 is a wasteful number, since it uses less digits than its factorization.

21043330130312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2538621 (or 2538617 counting only the distinct ones).

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

Adding to 21043330130312 its reverse (21303103334012), we get a palindrome (42346433464324).

The spelling of 21043330130312 in words is "twenty-one trillion, forty-three billion, three hundred thirty million, one hundred thirty thousand, three hundred twelve".