210201201220 has 24 divisors (see below), whose sum is σ = 442137982104. Its totient is φ = 83944202496.

The previous prime is 210201201167. The next prime is 210201201319. The reversal of 210201201220 is 22102102012.

It is a happy number.

210201201220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 20119152964 + 190082048256 = 141842^2 + 435984^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 210201201220.

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, 8504727 + ... + 8529406.

It is an arithmetic number, because the mean of its divisors is an integer number (18422415921).

Almost surely, 2^210201201220 is an apocalyptic number.

210201201220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210201201220 is an abundant number, since it is smaller than the sum of its proper divisors (231936780884).

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

210201201220 is a wasteful number, since it uses less digits than its factorization.

210201201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17034759 (or 17034757 counting only the distinct ones).

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

Adding to 210201201220 its reverse (22102102012), we get a palindrome (232303303232).

The spelling of 210201201220 in words is "two hundred ten billion, two hundred one million, two hundred one thousand, two hundred twenty".