111122212212 has 72 divisors (see below), whose sum is σ = 306518651712. Its totient is φ = 33663427200.

The previous prime is 111122212211. The next prime is 111122212231. The reversal of 111122212212 is 212212221111.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 (111122212211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1356912 + ... + 1436472.

It is an arithmetic number, because the mean of its divisors is an integer number (4257203496).

Almost surely, 2^111122212212 is an apocalyptic number.

111122212212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111122212212 is an abundant number, since it is smaller than the sum of its proper divisors (195396439500).

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

111122212212 is a wasteful number, since it uses less digits than its factorization.

111122212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83109 (or 83104 counting only the distinct ones).

The product of its digits is 64, while the sum is 18.

Adding to 111122212212 its reverse (212212221111), we get a palindrome (323334433323).

The spelling of 111122212212 in words is "one hundred eleven billion, one hundred twenty-two million, two hundred twelve thousand, two hundred twelve".