201221310210 has 16 divisors (see below), whose sum is σ = 482931144576. Its totient is φ = 53659016048.

The previous prime is 201221310181. The next prime is 201221310221. The reversal of 201221310210 is 12013122102.

201221310210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 201221310210.

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 7 ways as a sum of consecutive naturals, for example, 3353688474 + ... + 3353688533.

It is an arithmetic number, because the mean of its divisors is an integer number (30183196536).

Almost surely, 2^201221310210 is an apocalyptic number.

201221310210 is an abundant number, since it is smaller than the sum of its proper divisors (281709834366).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201221310210 is a wasteful number, since it uses less digits than its factorization.

201221310210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6707377017.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 201221310210 its reverse (12013122102), we get a palindrome (213234432312).

The spelling of 201221310210 in words is "two hundred one billion, two hundred twenty-one million, three hundred ten thousand, two hundred ten".