111112222221212 has 96 divisors (see below), whose sum is σ = 214004156357376. Its totient is φ = 50276537625600.

The previous prime is 111112222221199. The next prime is 111112222221241. The reversal of 111112222221212 is 212122222211111.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34881023 + ... + 37932969.

It is an arithmetic number, because the mean of its divisors is an integer number (2229209962056).

Almost surely, 2^{111112222221212} is an apocalyptic number.

It is an amenable number.

111112222221212 is a deficient number, since it is larger than the sum of its proper divisors (102891934136164).

111112222221212 is a wasteful number, since it uses less digits than its factorization.

111112222221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3052227 (or 3052225 counting only the distinct ones).

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

Adding to 111112222221212 its reverse (212122222211111), we get a palindrome (323234444432323).

The spelling of 111112222221212 in words is "one hundred eleven trillion, one hundred twelve billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred twelve".