111112211221212 has 24 divisors (see below), whose sum is σ = 259265999942656. Its totient is φ = 37036807489008.

The previous prime is 111112211221201. The next prime is 111112211221213. The reversal of 111112211221212 is 212122112211111.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111112211221213) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 73754638 + ... + 75246069.

Almost surely, 2^{111112211221212} is an apocalyptic number.

111112211221212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111112211221212 is an abundant number, since it is smaller than the sum of its proper divisors (148153788721444).

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

111112211221212 is a wasteful number, since it uses less digits than its factorization.

111112211221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149062857 (or 149062855 counting only the distinct ones).

The product of its digits is 64, while the sum is 21.

Adding to 111112211221212 its reverse (212122112211111), we get a palindrome (323234323432323).

The spelling of 111112211221212 in words is "one hundred eleven trillion, one hundred twelve billion, two hundred eleven million, two hundred twenty-one thousand, two hundred twelve".