111548028228 has 288 divisors, whose sum is σ = 338270284800. Its totient is φ = 28323800064.

The previous prime is 111548028217. The next prime is 111548028271. The reversal of 111548028228 is 822820845111.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 111548028228.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 134556918 + ... + 134557746.

It is an arithmetic number, because the mean of its divisors is an integer number (1174549600).

Almost surely, 2^111548028228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111548028228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169135142400).

111548028228 is an abundant number, since it is smaller than the sum of its proper divisors (226722256572).

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

111548028228 is a wasteful number, since it uses less digits than its factorization.

111548028228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1499 (or 1490 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 42.

The spelling of 111548028228 in words is "one hundred eleven billion, five hundred forty-eight million, twenty-eight thousand, two hundred twenty-eight".