201221210002210 has 16 divisors (see below), whose sum is σ = 362309315889600. Its totient is φ = 80463786692976.

The previous prime is 201221210002193. The next prime is 201221210002213. The reversal of 201221210002210 is 12200012122102.

It is a happy number.

201221210002210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (201221210002213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3087129270 + ... + 3087194449.

It is an arithmetic number, because the mean of its divisors is an integer number (22644332243100).

Almost surely, 2^{201221210002210} is an apocalyptic number.

201221210002210 is a deficient number, since it is larger than the sum of its proper divisors (161088105887390).

201221210002210 is a wasteful number, since it uses less digits than its factorization.

201221210002210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6174326985.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 201221210002210 its reverse (12200012122102), we get a palindrome (213421222124312).

The spelling of 201221210002210 in words is "two hundred one trillion, two hundred twenty-one billion, two hundred ten million, two thousand, two hundred ten".