111212111222 has 8 divisors (see below), whose sum is σ = 166833125496. Its totient is φ = 55601069392.

The previous prime is 111212111207. The next prime is 111212111239. The reversal of 111212111222 is 222111212111.

It is a sphenic number, since it is the product of 3 distinct primes.

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

It is a self number, because there is not a number n which added to its sum of digits gives 111212111222.

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, 2465168 + ... + 2509875.

It is an arithmetic number, because the mean of its divisors is an integer number (20854140687).

Almost surely, 2^111212111222 is an apocalyptic number.

111212111222 is a deficient number, since it is larger than the sum of its proper divisors (55621014274).

111212111222 is a wasteful number, since it uses less digits than its factorization.

111212111222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4986222.

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

Adding to 111212111222 its reverse (222111212111), we get a palindrome (333323323333).

The spelling of 111212111222 in words is "one hundred eleven billion, two hundred twelve million, one hundred eleven thousand, two hundred twenty-two".