111212011202212 has 24 divisors (see below), whose sum is σ = 198296113188096. Its totient is φ = 54556010597088.

The previous prime is 111212011202191. The next prime is 111212011202221. The reversal of 111212011202212 is 212202110212111.

It is a happy number.

It is a super-2 number, since 2×111212011202212² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111212011202212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10203373 + ... + 18070219.

It is an arithmetic number, because the mean of its divisors is an integer number (8262338049504).

Almost surely, 2^{111212011202212} is an apocalyptic number.

It is an amenable number.

111212011202212 is a deficient number, since it is larger than the sum of its proper divisors (87084101985884).

111212011202212 is a wasteful number, since it uses less digits than its factorization.

111212011202212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7933587 (or 7933585 counting only the distinct ones).

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

Adding to 111212011202212 its reverse (212202110212111), we get a palindrome (323414121414323).

The spelling of 111212011202212 in words is "one hundred eleven trillion, two hundred twelve billion, eleven million, two hundred two thousand, two hundred twelve".