111222121112 has 32 divisors (see below), whose sum is σ = 219543231600. Its totient is φ = 52677949824.

The previous prime is 111222121081. The next prime is 111222121133. The reversal of 111222121112 is 211121222111.

It is a super-2 number, since 2×111222121112² (a number of 23 digits) contains 22 as substring.

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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1410638 + ... + 1487394.

Almost surely, 2^111222121112 is an apocalyptic number.

It is an amenable number.

111222121112 is a deficient number, since it is larger than the sum of its proper divisors (108321110488).

111222121112 is a wasteful number, since it uses less digits than its factorization.

111222121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86315 (or 86311 counting only the distinct ones).

The product of its digits is 32, while the sum is 17.

Adding to 111222121112 its reverse (211121222111), we get a palindrome (322343343223).

The spelling of 111222121112 in words is "one hundred eleven billion, two hundred twenty-two million, one hundred twenty-one thousand, one hundred twelve".