21021002200210 has 16 divisors (see below), whose sum is σ = 37837879926336. Its totient is φ = 8408383998768.

The previous prime is 21021002200141. The next prime is 21021002200249. The reversal of 21021002200210 is 1200220012012.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3947989 + ... + 7591351.

It is an arithmetic number, because the mean of its divisors is an integer number (2364867495396).

Almost surely, 2^{21021002200210} is an apocalyptic number.

21021002200210 is a deficient number, since it is larger than the sum of its proper divisors (16816877726126).

21021002200210 is a wasteful number, since it uses less digits than its factorization.

21021002200210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4220337.

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

Adding to 21021002200210 its reverse (1200220012012), we get a palindrome (22221222212222).

The spelling of 21021002200210 in words is "twenty-one trillion, twenty-one billion, two million, two hundred thousand, two hundred ten".