21323003312 has 40 divisors (see below), whose sum is σ = 44586740016. Its totient is φ = 9820267776.

The previous prime is 21323003309. The next prime is 21323003329. The reversal of 21323003312 is 21330032312.

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, 12623 + ... + 206894.

Almost surely, 2^21323003312 is an apocalyptic number.

It is an amenable number.

21323003312 is an abundant number, since it is smaller than the sum of its proper divisors (23263736704).

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

21323003312 is a wasteful number, since it uses less digits than its factorization.

21323003312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220005 (or 219999 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 21323003312 its reverse (21330032312), we get a palindrome (42653035624).

The spelling of 21323003312 in words is "twenty-one billion, three hundred twenty-three million, three thousand, three hundred twelve".