201220101210220 has 24 divisors (see below), whose sum is σ = 422575042554000. Its totient is φ = 80485596672192.

The previous prime is 201220101210203. The next prime is 201220101210241. The reversal of 201220101210220 is 22012101022102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 201220101210194 and 201220101210203.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152062995 + ... + 153380554.

It is an arithmetic number, because the mean of its divisors is an integer number (17607293439750).

Almost surely, 2^{201220101210220} is an apocalyptic number.

201220101210220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201220101210220 is an abundant number, since it is smaller than the sum of its proper divisors (221354941343780).

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

201220101210220 is a wasteful number, since it uses less digits than its factorization.

201220101210220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305476497 (or 305476495 counting only the distinct ones).

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

Adding to 201220101210220 its reverse (22012101022102), we get a palindrome (223232202232322).

The spelling of 201220101210220 in words is "two hundred one trillion, two hundred twenty billion, one hundred one million, two hundred ten thousand, two hundred twenty".