201122021212 has 12 divisors (see below), whose sum is σ = 402244042480. Its totient is φ = 86195151936.

The previous prime is 201122021209. The next prime is 201122021231. The reversal of 201122021212 is 212120221102.

It is a happy number.

201122021212 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3591464637 + ... + 3591464692.

Almost surely, 2^201122021212 is an apocalyptic number.

It is an amenable number.

201122021212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

201122021212 is a wasteful number, since it uses less digits than its factorization.

201122021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7182929340 (or 7182929338 counting only the distinct ones).

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

Adding to 201122021212 its reverse (212120221102), we get a palindrome (413242242314).

The spelling of 201122021212 in words is "two hundred one billion, one hundred twenty-two million, twenty-one thousand, two hundred twelve".