201021220210 has 16 divisors (see below), whose sum is σ = 362018880576. Its totient is φ = 80368336048.

The previous prime is 201021220207. The next prime is 201021220217. The reversal of 201021220210 is 12022120102.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (201021220217) 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, 4997974 + ... + 5038033.

It is an arithmetic number, because the mean of its divisors is an integer number (22626180036).

Almost surely, 2^201021220210 is an apocalyptic number.

201021220210 is a deficient number, since it is larger than the sum of its proper divisors (160997660366).

201021220210 is a wasteful number, since it uses less digits than its factorization.

201021220210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10038017.

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

Adding to 201021220210 its reverse (12022120102), we get a palindrome (213043340312).

The spelling of 201021220210 in words is "two hundred one billion, twenty-one million, two hundred twenty thousand, two hundred ten".