111212201210212 has 48 divisors (see below), whose sum is σ = 206410809971520. Its totient is φ = 52248535944192.

The previous prime is 111212201210167. The next prime is 111212201210213. The reversal of 111212201210212 is 212012102212111.

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 111212201210212.

It is not an unprimeable number, because it can be changed into a prime (111212201210213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 332203303 + ... + 332537905.

It is an arithmetic number, because the mean of its divisors is an integer number (4300225207740).

Almost surely, 2^{111212201210212} is an apocalyptic number.

It is an amenable number.

111212201210212 is a deficient number, since it is larger than the sum of its proper divisors (95198608761308).

111212201210212 is a wasteful number, since it uses less digits than its factorization.

111212201210212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342700 (or 342698 counting only the distinct ones).

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

Adding to 111212201210212 its reverse (212012102212111), we get a palindrome (323224303422323).

The spelling of 111212201210212 in words is "one hundred eleven trillion, two hundred twelve billion, two hundred one million, two hundred ten thousand, two hundred twelve".