21010300012 has 12 divisors (see below), whose sum is σ = 39596334736. Its totient is φ = 9697061520.

The previous prime is 21010300009. The next prime is 21010300013. The reversal of 21010300012 is 21000301012.

It is not an unprimeable number, because it can be changed into a prime (21010300013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202022064 + ... + 202022167.

Almost surely, 2^21010300012 is an apocalyptic number.

It is an amenable number.

21010300012 is a deficient number, since it is larger than the sum of its proper divisors (18586034724).

21010300012 is a wasteful number, since it uses less digits than its factorization.

21010300012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404044248 (or 404044246 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 21010300012 its reverse (21000301012), we get a palindrome (42010601024).

The spelling of 21010300012 in words is "twenty-one billion, ten million, three hundred thousand, twelve".