111212212 has 12 divisors (see below), whose sum is σ = 194795776. Its totient is φ = 55556280.

The previous prime is 111212203. The next prime is 111212239. The reversal of 111212212 is 212212111.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 111212192 and 111212201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7188 + ... + 16555.

Almost surely, 2^111212212 is an apocalyptic number.

It is an amenable number.

111212212 is a deficient number, since it is larger than the sum of its proper divisors (83583564).

111212212 is a wasteful number, since it uses less digits than its factorization.

111212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24918 (or 24916 counting only the distinct ones).

The product of its digits is 16, while the sum is 13.

The square root of 111212212 is about 10545.7200797290. The cubic root of 111212212 is about 480.8956252797.

Adding to 111212212 its reverse (212212111), we get a palindrome (323424323).

It can be divided in two parts, 111 and 212212, that multiplied together give a palindrome (23555532).

The spelling of 111212212 in words is "one hundred eleven million, two hundred twelve thousand, two hundred twelve".