111111122222212 has 48 divisors (see below), whose sum is σ = 224958081559680. Its totient is φ = 47035052064000.

The previous prime is 111111122222197. The next prime is 111111122222263. The reversal of 111111122222212 is 212222221111111.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45700089 + ... + 48069952.

It is an arithmetic number, because the mean of its divisors is an integer number (4686626699160).

Almost surely, 2^{111111122222212} is an apocalyptic number.

It is an amenable number.

111111122222212 is an abundant number, since it is smaller than the sum of its proper divisors (113846959337468).

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

111111122222212 is a wasteful number, since it uses less digits than its factorization.

111111122222212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93770572 (or 93770570 counting only the distinct ones).

The product of its digits is 128, while the sum is 22.

Adding to 111111122222212 its reverse (212222221111111), we get a palindrome (323333343333323).

The spelling of 111111122222212 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred twenty-two million, two hundred twenty-two thousand, two hundred twelve".