200001212221212 has 72 divisors (see below), whose sum is σ = 505975929338880. Its totient is φ = 66612046868640.

The previous prime is 200001212221193. The next prime is 200001212221249. The reversal of 200001212221212 is 212122212100002.

It is a happy number.

200001212221212 is a `hidden beast` number, since 20 + 0 + 0 + 0 + 1 + 212 + 221 + 212 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 875705089 + ... + 875933447.

It is an arithmetic number, because the mean of its divisors is an integer number (7027443463040).

Almost surely, 2^{200001212221212} is an apocalyptic number.

It is an amenable number.

200001212221212 is an abundant number, since it is smaller than the sum of its proper divisors (305974717117668).

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

200001212221212 is a wasteful number, since it uses less digits than its factorization.

200001212221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248343 (or 248338 counting only the distinct ones).

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

Adding to 200001212221212 its reverse (212122212100002), we get a palindrome (412123424321214).

The spelling of 200001212221212 in words is "two hundred trillion, one billion, two hundred twelve million, two hundred twenty-one thousand, two hundred twelve".