111212211200212 has 24 divisors (see below), whose sum is σ = 203083993022400. Its totient is φ = 53188232830656.

The previous prime is 111212211200197. The next prime is 111212211200261. The reversal of 111212211200212 is 212002112212111.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 111212211200212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21596239 + ... + 26245417.

It is an arithmetic number, because the mean of its divisors is an integer number (8461833042600).

Almost surely, 2^{111212211200212} is an apocalyptic number.

It is an amenable number.

111212211200212 is a deficient number, since it is larger than the sum of its proper divisors (91871781822188).

111212211200212 is a wasteful number, since it uses less digits than its factorization.

111212211200212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4909215 (or 4909213 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 111212211200212 its reverse (212002112212111), we get a palindrome (323214323412323).

The spelling of 111212211200212 in words is "one hundred eleven trillion, two hundred twelve billion, two hundred eleven million, two hundred thousand, two hundred twelve".