21002013320210 has 64 divisors (see below), whose sum is σ = 41305686912000. Its totient is φ = 7641538652160.

The previous prime is 21002013320209. The next prime is 21002013320221. The reversal of 21002013320210 is 1202331020012.

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 31 ways as a sum of consecutive naturals, for example, 17881634 + ... + 19019906.

It is an arithmetic number, because the mean of its divisors is an integer number (645401358000).

Almost surely, 2^{21002013320210} is an apocalyptic number.

21002013320210 is a deficient number, since it is larger than the sum of its proper divisors (20303673591790).

21002013320210 is a wasteful number, since it uses less digits than its factorization.

21002013320210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140363.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21002013320210 its reverse (1202331020012), we get a palindrome (22204344340222).

The spelling of 21002013320210 in words is "twenty-one trillion, two billion, thirteen million, three hundred twenty thousand, two hundred ten".