1112111211222 has 48 divisors (see below), whose sum is σ = 2628792176400. Its totient is φ = 336982156800.

The previous prime is 1112111211199. The next prime is 1112111211227. The reversal of 1112111211222 is 2221121112111.

It is a happy number.

1112111211222 is a `hidden beast` number, since 111 + 211 + 121 + 1 + 222 = 666.

It is a super-2 number, since 2×1112111211222² (a number of 25 digits) contains 22 as substring.

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 junction number, because it is equal to n+sod(n) for n = 1112111211195 and 1112111211204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112111211227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3127822 + ... + 3465182.

It is an arithmetic number, because the mean of its divisors is an integer number (54766503675).

Almost surely, 2^{1112111211222} is an apocalyptic number.

1112111211222 is an abundant number, since it is smaller than the sum of its proper divisors (1516680965178).

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

1112111211222 is a wasteful number, since it uses less digits than its factorization.

1112111211222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354029 (or 354026 counting only the distinct ones).

The product of its digits is 32, while the sum is 18.

Adding to 1112111211222 its reverse (2221121112111), we get a palindrome (3333232323333).

The spelling of 1112111211222 in words is "one trillion, one hundred twelve billion, one hundred eleven million, two hundred eleven thousand, two hundred twenty-two".