21310303012 has 24 divisors (see below), whose sum is σ = 39491353440. Its totient is φ = 10027205760.

The previous prime is 21310302977. The next prime is 21310303051. The reversal of 21310303012 is 21030301312.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 914587 + ... + 937597.

It is an arithmetic number, because the mean of its divisors is an integer number (1645473060).

Almost surely, 2^21310303012 is an apocalyptic number.

It is an amenable number.

21310303012 is a deficient number, since it is larger than the sum of its proper divisors (18181050428).

21310303012 is a wasteful number, since it uses less digits than its factorization.

21310303012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36651 (or 36649 counting only the distinct ones).

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

Adding to 21310303012 its reverse (21030301312), we get a palindrome (42340604324).

The spelling of 21310303012 in words is "twenty-one billion, three hundred ten million, three hundred three thousand, twelve".