21002002202 has 16 divisors (see below), whose sum is σ = 32834959872. Its totient is φ = 10063593360.

The previous prime is 21002002163. The next prime is 21002002243. The reversal of 21002002202 is 20220020012.

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, 1637993 + ... + 1650764.

It is an arithmetic number, because the mean of its divisors is an integer number (2052184992).

Almost surely, 2^21002002202 is an apocalyptic number.

21002002202 is a deficient number, since it is larger than the sum of its proper divisors (11832957670).

21002002202 is a wasteful number, since it uses less digits than its factorization.

21002002202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3288893.

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

Adding to 21002002202 its reverse (20220020012), we get a palindrome (41222022214).

The spelling of 21002002202 in words is "twenty-one billion, two million, two thousand, two hundred two".