21202001102002 has 16 divisors (see below), whose sum is σ = 36679739785920. Its totient is φ = 9003208855248.

The previous prime is 21202001101999. The next prime is 21202001102063. The reversal of 21202001102002 is 20020110020212.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6946918888 + ... + 6946921939.

It is an arithmetic number, because the mean of its divisors is an integer number (2292483736620).

Almost surely, 2^{21202001102002} is an apocalyptic number.

21202001102002 is a deficient number, since it is larger than the sum of its proper divisors (15477738683918).

21202001102002 is a wasteful number, since it uses less digits than its factorization.

21202001102002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13893840945.

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

Adding to 21202001102002 its reverse (20020110020212), we get a palindrome (41222111122214).

The spelling of 21202001102002 in words is "twenty-one trillion, two hundred two billion, one million, one hundred two thousand, two".