21303113231012 has 12 divisors (see below), whose sum is σ = 37377786141696. Its totient is φ = 10623745761960.

The previous prime is 21303113231009. The next prime is 21303113231021. The reversal of 21303113231012 is 21013231130312.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6952711664 + ... + 6952714727.

It is an arithmetic number, because the mean of its divisors is an integer number (3114815511808).

Almost surely, 2^{21303113231012} is an apocalyptic number.

It is an amenable number.

21303113231012 is a deficient number, since it is larger than the sum of its proper divisors (16074672910684).

21303113231012 is a wasteful number, since it uses less digits than its factorization.

21303113231012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13905426778 (or 13905426776 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 21303113231012 its reverse (21013231130312), we get a palindrome (42316344361324).

The spelling of 21303113231012 in words is "twenty-one trillion, three hundred three billion, one hundred thirteen million, two hundred thirty-one thousand, twelve".