201021120210 has 16 divisors (see below), whose sum is σ = 482450688576. Its totient is φ = 53605632048.

The previous prime is 201021120203. The next prime is 201021120211. The reversal of 201021120210 is 12021120102.

It is not an unprimeable number, because it can be changed into a prime (201021120211) by changing a digit.

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, 3350351974 + ... + 3350352033.

It is an arithmetic number, because the mean of its divisors is an integer number (30153168036).

Almost surely, 2^201021120210 is an apocalyptic number.

201021120210 is an abundant number, since it is smaller than the sum of its proper divisors (281429568366).

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

201021120210 is a wasteful number, since it uses less digits than its factorization.

201021120210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6700704017.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 201021120210 its reverse (12021120102), we get a palindrome (213042240312).

The spelling of 201021120210 in words is "two hundred one billion, twenty-one million, one hundred twenty thousand, two hundred ten".