1111112220222 has 192 divisors, whose sum is σ = 2758129807680. Its totient is φ = 321029111808.

The previous prime is 1111112220193. The next prime is 1111112220247. The reversal of 1111112220222 is 2220222111111.

1111112220222 is a `hidden beast` number, since 1 + 111 + 112 + 220 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1111112220195 and 1111112220204.

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 459705958 + ... + 459708374.

It is an arithmetic number, because the mean of its divisors is an integer number (14365259415).

Almost surely, 2^{1111112220222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1111112220222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1379064903840).

1111112220222 is an abundant number, since it is smaller than the sum of its proper divisors (1647017587458).

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

1111112220222 is a wasteful number, since it uses less digits than its factorization.

1111112220222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4635 (or 4632 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 1111112220222 its reverse (2220222111111), we get a palindrome (3331334331333).

The spelling of 1111112220222 in words is "one trillion, one hundred eleven billion, one hundred twelve million, two hundred twenty thousand, two hundred twenty-two".