21032303012 has 48 divisors (see below), whose sum is σ = 43532885760. Its totient is φ = 8699467392.

The previous prime is 21032303009. The next prime is 21032303029. The reversal of 21032303012 is 21030323012.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3120398 + ... + 3127130.

It is an arithmetic number, because the mean of its divisors is an integer number (906935120).

Almost surely, 2^21032303012 is an apocalyptic number.

It is an amenable number.

21032303012 is an abundant number, since it is smaller than the sum of its proper divisors (22500582748).

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

21032303012 is a wasteful number, since it uses less digits than its factorization.

21032303012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10620 (or 10618 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21032303012 its reverse (21030323012), we get a palindrome (42062626024).

The spelling of 21032303012 in words is "twenty-one billion, thirty-two million, three hundred three thousand, twelve".