111211222212212 has 12 divisors (see below), whose sum is σ = 197083178604480. Its totient is φ = 54901742610936.

The previous prime is 111211222212197. The next prime is 111211222212217. The reversal of 111211222212212 is 212212222112111.

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 (111211222212217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175967123438 + ... + 175967124069.

It is an arithmetic number, because the mean of its divisors is an integer number (16423598217040).

Almost surely, 2^{111211222212212} is an apocalyptic number.

It is an amenable number.

111211222212212 is a deficient number, since it is larger than the sum of its proper divisors (85871956392268).

111211222212212 is a wasteful number, since it uses less digits than its factorization.

111211222212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351934247590 (or 351934247588 counting only the distinct ones).

The product of its digits is 256, while the sum is 23.

Adding to 111211222212212 its reverse (212212222112111), we get a palindrome (323423444324323).

The spelling of 111211222212212 in words is "one hundred eleven trillion, two hundred eleven billion, two hundred twenty-two million, two hundred twelve thousand, two hundred twelve".