21323010202 has 24 divisors (see below), whose sum is σ = 34700629824. Its totient is φ = 9822490704.

The previous prime is 21323010173. The next prime is 21323010229. The reversal of 21323010202 is 20201032312.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 116463 + ... + 237085.

It is an arithmetic number, because the mean of its divisors is an integer number (1445859576).

Almost surely, 2^21323010202 is an apocalyptic number.

21323010202 is a deficient number, since it is larger than the sum of its proper divisors (13377619622).

21323010202 is a wasteful number, since it uses less digits than its factorization.

21323010202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121174 (or 121161 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21323010202 its reverse (20201032312), we get a palindrome (41524042514).

The spelling of 21323010202 in words is "twenty-one billion, three hundred twenty-three million, ten thousand, two hundred two".