201222020011212 has 144 divisors (see below), whose sum is σ = 532367710973280. Its totient is φ = 64015468867584.

The previous prime is 201222020011169. The next prime is 201222020011241. The reversal of 201222020011212 is 212110020222102.

It is a happy number.

201222020011212 is a `hidden beast` number, since 20 + 1 + 2 + 220 + 200 + 11 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 316163964 + ... + 316799772.

It is an arithmetic number, because the mean of its divisors is an integer number (3696997992870).

Almost surely, 2^{201222020011212} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201222020011212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266183855486640).

201222020011212 is an abundant number, since it is smaller than the sum of its proper divisors (331145690962068).

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

201222020011212 is a wasteful number, since it uses less digits than its factorization.

201222020011212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640392 (or 640387 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 201222020011212 its reverse (212110020222102), we get a palindrome (413332040233314).

The spelling of 201222020011212 in words is "two hundred one trillion, two hundred twenty-two billion, twenty million, eleven thousand, two hundred twelve".