111012201228 has 48 divisors (see below), whose sum is σ = 274342239360. Its totient is φ = 34817604864.

The previous prime is 111012201221. The next prime is 111012201277. The reversal of 111012201228 is 822102210111.

It is not an unprimeable number, because it can be changed into a prime (111012201221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 672075 + ... + 820797.

It is an arithmetic number, because the mean of its divisors is an integer number (5715463320).

Almost surely, 2^111012201228 is an apocalyptic number.

It is an amenable number.

111012201228 is an abundant number, since it is smaller than the sum of its proper divisors (163330038132).

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

111012201228 is a wasteful number, since it uses less digits than its factorization.

111012201228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152406 (or 152404 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 111012201228 its reverse (822102210111), we get a palindrome (933114411339).

The spelling of 111012201228 in words is "one hundred eleven billion, twelve million, two hundred one thousand, two hundred twenty-eight".