201111122001212 has 24 divisors (see below), whose sum is σ = 352050655442304. Its totient is φ = 100525222817712.

The previous prime is 201111122001203. The next prime is 201111122001239. The reversal of 201111122001212 is 212100221111102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 354894443 + ... + 355460669.

It is an arithmetic number, because the mean of its divisors is an integer number (14668777310096).

Almost surely, 2^{201111122001212} is an apocalyptic number.

It is an amenable number.

201111122001212 is a deficient number, since it is larger than the sum of its proper divisors (150939533441092).

201111122001212 is a wasteful number, since it uses less digits than its factorization.

201111122001212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592865 (or 592863 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 201111122001212 its reverse (212100221111102), we get a palindrome (413211343112314).

The spelling of 201111122001212 in words is "two hundred one trillion, one hundred eleven billion, one hundred twenty-two million, one thousand, two hundred twelve".