21301303012 has 12 divisors (see below), whose sum is σ = 40666124016. Its totient is φ = 9682410440.

The previous prime is 21301303003. The next prime is 21301303019. The reversal of 21301303012 is 21030310312.

It is not an unprimeable number, because it can be changed into a prime (21301303019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 242060218 + ... + 242060305.

It is an arithmetic number, because the mean of its divisors is an integer number (3388843668).

Almost surely, 2^21301303012 is an apocalyptic number.

21301303012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21301303012 is a deficient number, since it is larger than the sum of its proper divisors (19364821004).

21301303012 is a wasteful number, since it uses less digits than its factorization.

21301303012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484120538 (or 484120536 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 21301303012 its reverse (21030310312), we get a palindrome (42331613324).

The spelling of 21301303012 in words is "twenty-one billion, three hundred one million, three hundred three thousand, twelve".