201211222101212 has 6 divisors (see below), whose sum is σ = 352119638677128. Its totient is φ = 100605611050604.

The previous prime is 201211222101139. The next prime is 201211222101257. The reversal of 201211222101212 is 212101222112102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25151402762648 + ... + 25151402762655.

It is an arithmetic number, because the mean of its divisors is an integer number (58686606446188).

Almost surely, 2^{201211222101212} is an apocalyptic number.

It is an amenable number.

201211222101212 is a deficient number, since it is larger than the sum of its proper divisors (150908416575916).

201211222101212 is a wasteful number, since it uses less digits than its factorization.

201211222101212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50302805525307 (or 50302805525305 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 201211222101212 its reverse (212101222112102), we get a palindrome (413312444213314).

The spelling of 201211222101212 in words is "two hundred one trillion, two hundred eleven billion, two hundred twenty-two million, one hundred one thousand, two hundred twelve".