111022221121212 has 96 divisors (see below), whose sum is σ = 271562830249984. Its totient is φ = 35257860792000.

The previous prime is 111022221121193. The next prime is 111022221121289. The reversal of 111022221121212 is 212121122220111.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 40109337 + ... + 42787887.

Almost surely, 2^{111022221121212} is an apocalyptic number.

111022221121212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111022221121212 is an abundant number, since it is smaller than the sum of its proper divisors (160540609128772).

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

111022221121212 is a wasteful number, since it uses less digits than its factorization.

111022221121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2680319 (or 2680317 counting only the distinct ones).

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

Adding to 111022221121212 its reverse (212121122220111), we get a palindrome (323143343341323).

The spelling of 111022221121212 in words is "one hundred eleven trillion, twenty-two billion, two hundred twenty-one million, one hundred twenty-one thousand, two hundred twelve".