21322300312 has 32 divisors (see below), whose sum is σ = 40537411200. Its totient is φ = 10512969984.

The previous prime is 21322300297. The next prime is 21322300361. The reversal of 21322300312 is 21300322312.

It is a self number, because there is not a number n which added to its sum of digits gives 21322300312.

It is a congruent number.

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, 225433 + ... + 305719.

It is an arithmetic number, because the mean of its divisors is an integer number (1266794100).

Almost surely, 2^21322300312 is an apocalyptic number.

It is an amenable number.

21322300312 is a deficient number, since it is larger than the sum of its proper divisors (19215110888).

21322300312 is a wasteful number, since it uses less digits than its factorization.

21322300312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80755 (or 80751 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21322300312 its reverse (21300322312), we get a palindrome (42622622624).

The spelling of 21322300312 in words is "twenty-one billion, three hundred twenty-two million, three hundred thousand, three hundred twelve".