201021212212 has 6 divisors (see below), whose sum is σ = 351787121378. Its totient is φ = 100510606104.

The previous prime is 201021212201. The next prime is 201021212251. The reversal of 201021212212 is 212212120102.

It is a happy number.

201021212212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 196403194276 + 4618017936 = 443174^2 + 67956^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25127651523 + ... + 25127651530.

Almost surely, 2^201021212212 is an apocalyptic number.

It is an amenable number.

201021212212 is a deficient number, since it is larger than the sum of its proper divisors (150765909166).

201021212212 is a wasteful number, since it uses less digits than its factorization.

201021212212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50255303057 (or 50255303055 counting only the distinct ones).

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

Adding to 201021212212 its reverse (212212120102), we get a palindrome (413233332314).

The spelling of 201021212212 in words is "two hundred one billion, twenty-one million, two hundred twelve thousand, two hundred twelve".