21302101312 has 28 divisors (see below), whose sum is σ = 42457603680. Its totient is φ = 10604122496.

The previous prime is 21302101297. The next prime is 21302101333. The reversal of 21302101312 is 21310120312.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

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, 718612 + ... + 747667.

Almost surely, 2^21302101312 is an apocalyptic number.

It is an amenable number.

21302101312 is a deficient number, since it is larger than the sum of its proper divisors (21155502368).

21302101312 is a wasteful number, since it uses less digits than its factorization.

21302101312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1466518 (or 1466508 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21302101312 its reverse (21310120312), we get a palindrome (42612221624).

The spelling of 21302101312 in words is "twenty-one billion, three hundred two million, one hundred one thousand, three hundred twelve".