111112220021212 has 12 divisors (see below), whose sum is σ = 194465316701376. Its totient is φ = 55550700963680.

The previous prime is 111112220021189. The next prime is 111112220021213. The reversal of 111112220021212 is 212120022211111.

It is a happy number.

111112220021212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 111112220021212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111112220021213) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1352215513 + ... + 1352297680.

It is an arithmetic number, because the mean of its divisors is an integer number (16205443058448).

Almost surely, 2^{111112220021212} is an apocalyptic number.

It is an amenable number.

111112220021212 is a deficient number, since it is larger than the sum of its proper divisors (83353096680164).

111112220021212 is a wasteful number, since it uses less digits than its factorization.

111112220021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2704523468 (or 2704523466 counting only the distinct ones).

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

Adding to 111112220021212 its reverse (212120022211111), we get a palindrome (323232242232323).

The spelling of 111112220021212 in words is "one hundred eleven trillion, one hundred twelve billion, two hundred twenty million, twenty-one thousand, two hundred twelve".