111212112212 has 12 divisors (see below), whose sum is σ = 194646129216. Its totient is φ = 55598932440.

The previous prime is 111212112169. The next prime is 111212112257. The reversal of 111212112212 is 212211212111.

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

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, 1745714 + ... + 1808297.

It is an arithmetic number, because the mean of its divisors is an integer number (16220510768).

Almost surely, 2^111212112212 is an apocalyptic number.

It is an amenable number.

111212112212 is a deficient number, since it is larger than the sum of its proper divisors (83434017004).

111212112212 is a wasteful number, since it uses less digits than its factorization.

111212112212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3561838 (or 3561836 counting only the distinct ones).

The product of its digits is 32, while the sum is 17.

Adding to 111212112212 its reverse (212211212111), we get a palindrome (323423324323).

The spelling of 111212112212 in words is "one hundred eleven billion, two hundred twelve million, one hundred twelve thousand, two hundred twelve".