21002002210012 has 12 divisors (see below), whose sum is σ = 36753574709376. Its totient is φ = 10500980864480.

The previous prime is 21002002210009. The next prime is 21002002210031. The reversal of 21002002210012 is 21001220020012.

It is a happy number.

It is a super-3 number, since 3×21002002210012³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21002002209974 and 21002002210001.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2591689 + ... + 6980032.

It is an arithmetic number, because the mean of its divisors is an integer number (3062797892448).

Almost surely, 2^{21002002210012} is an apocalyptic number.

It is an amenable number.

21002002210012 is a deficient number, since it is larger than the sum of its proper divisors (15751572499364).

21002002210012 is a wasteful number, since it uses less digits than its factorization.

21002002210012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10120268 (or 10120266 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21002002210012 its reverse (21001220020012), we get a palindrome (42003222230024).

The spelling of 21002002210012 in words is "twenty-one trillion, two billion, two million, two hundred ten thousand, twelve".