111012222222 has 240 divisors, whose sum is σ = 290199275520. Its totient is φ = 31605124320.

The previous prime is 111012222187. The next prime is 111012222253. The reversal of 111012222222 is 222222210111.

It is a happy number.

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

111012222222 is a modest number, since divided by 222222 gives 111012 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 111012222195 and 111012222204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 47298453 + ... + 47300799.

It is an arithmetic number, because the mean of its divisors is an integer number (1209163648).

Almost surely, 2^111012222222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111012222222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145099637760).

111012222222 is an abundant number, since it is smaller than the sum of its proper divisors (179187053298).

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

111012222222 is a wasteful number, since it uses less digits than its factorization.

111012222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2529 (or 2509 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 111012222222 its reverse (222222210111), we get a palindrome (333234432333).

The spelling of 111012222222 in words is "one hundred eleven billion, twelve million, two hundred twenty-two thousand, two hundred twenty-two".