21002110202012 has 24 divisors (see below), whose sum is σ = 37219374796800. Its totient is φ = 10368006298416.

The previous prime is 21002110202011. The next prime is 21002110202033. The reversal of 21002110202012 is 21020201120012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002110202011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29639189 + ... + 30339507.

It is an arithmetic number, because the mean of its divisors is an integer number (1550807283200).

Almost surely, 2^{21002110202012} is an apocalyptic number.

It is an amenable number.

21002110202012 is a deficient number, since it is larger than the sum of its proper divisors (16217264594788).

21002110202012 is a wasteful number, since it uses less digits than its factorization.

21002110202012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795305 (or 795303 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21002110202012 its reverse (21020201120012), we get a palindrome (42022311322024).

The spelling of 21002110202012 in words is "twenty-one trillion, two billion, one hundred ten million, two hundred two thousand, twelve".