111222112021212 has 24 divisors (see below), whose sum is σ = 259519178950416. Its totient is φ = 37073906259328.

The previous prime is 111222112021201. The next prime is 111222112021243. The reversal of 111222112021212 is 212120211222111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12818673 + ... + 19666280.

It is an arithmetic number, because the mean of its divisors is an integer number (10813299122934).

Almost surely, 2^{111222112021212} is an apocalyptic number.

111222112021212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111222112021212 is an abundant number, since it is smaller than the sum of its proper divisors (148297066929204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111222112021212 is a wasteful number, since it uses less digits than its factorization.

111222112021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32770277 (or 32770275 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 111222112021212 its reverse (212120211222111), we get a palindrome (323342323243323).

The spelling of 111222112021212 in words is "one hundred eleven trillion, two hundred twenty-two billion, one hundred twelve million, twenty-one thousand, two hundred twelve".