201110111121212 has 12 divisors (see below), whose sum is σ = 351942826406640. Its totient is φ = 100555017862176.

The previous prime is 201110111121107. The next prime is 201110111121223. The reversal of 201110111121212 is 212121111011102.

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 3 ways as a sum of consecutive naturals, for example, 5047793 + ... + 20680919.

It is an arithmetic number, because the mean of its divisors is an integer number (29328568867220).

Almost surely, 2^{201110111121212} is an apocalyptic number.

It is an amenable number.

201110111121212 is a deficient number, since it is larger than the sum of its proper divisors (150832715285428).

201110111121212 is a wasteful number, since it uses less digits than its factorization.

201110111121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18849220 (or 18849218 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 201110111121212 its reverse (212121111011102), we get a palindrome (413231222132314).

The spelling of 201110111121212 in words is "two hundred one trillion, one hundred ten billion, one hundred eleven million, one hundred twenty-one thousand, two hundred twelve".