21202002002 has 16 divisors (see below), whose sum is σ = 33957506880. Its totient is φ = 9904270992.

The previous prime is 21202002001. The next prime is 21202002007. The reversal of 21202002002 is 20020020212.

It is not an unprimeable number, because it can be changed into a prime (21202002001) 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 7 ways as a sum of consecutive naturals, for example, 5357477 + ... + 5361432.

It is an arithmetic number, because the mean of its divisors is an integer number (2122344180).

Almost surely, 2^21202002002 is an apocalyptic number.

21202002002 is a deficient number, since it is larger than the sum of its proper divisors (12755504878).

21202002002 is a wasteful number, since it uses less digits than its factorization.

21202002002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10718977.

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 21202002002 its reverse (20020020212), we get a palindrome (41222022214).

The spelling of 21202002002 in words is "twenty-one billion, two hundred two million, two thousand, two".