21001330102312 has 16 divisors (see below), whose sum is σ = 45002850219360. Its totient is φ = 9000570043824.

The previous prime is 21001330102273. The next prime is 21001330102321. The reversal of 21001330102312 is 21320103310012.

It is a self number, because there is not a number n which added to its sum of digits gives 21001330102312.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187511875858 + ... + 187511875969.

It is an arithmetic number, because the mean of its divisors is an integer number (2812678138710).

Almost surely, 2^{21001330102312} is an apocalyptic number.

It is an amenable number.

21001330102312 is an abundant number, since it is smaller than the sum of its proper divisors (24001520117048).

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

21001330102312 is a wasteful number, since it uses less digits than its factorization.

21001330102312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375023751840 (or 375023751836 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21001330102312 its reverse (21320103310012), we get a palindrome (42321433412324).

The spelling of 21001330102312 in words is "twenty-one trillion, one billion, three hundred thirty million, one hundred two thousand, three hundred twelve".