111222222180 has 48 divisors (see below), whose sum is σ = 311438131200. Its totient is φ = 29657744128.

The previous prime is 111222222179. The next prime is 111222222191. The reversal of 111222222180 is 81222222111.

It is a self number, because there is not a number n which added to its sum of digits gives 111222222180.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1625296 + ... + 1692344.

It is an arithmetic number, because the mean of its divisors is an integer number (6488294400).

Almost surely, 2^111222222180 is an apocalyptic number.

111222222180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111222222180 is an abundant number, since it is smaller than the sum of its proper divisors (200215909020).

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

111222222180 is a wasteful number, since it uses less digits than its factorization.

111222222180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94708 (or 94706 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 24.

Adding to 111222222180 its reverse (81222222111), we get a palindrome (192444444291).

The spelling of 111222222180 in words is "one hundred eleven billion, two hundred twenty-two million, two hundred twenty-two thousand, one hundred eighty".