111100122228 has 12 divisors (see below), whose sum is σ = 259233618560. Its totient is φ = 37033374072.

The previous prime is 111100122197. The next prime is 111100122229. The reversal of 111100122228 is 822221001111.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-4 number, since 4×111100122228⁴ (a number of 45 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111100122229) 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 3 ways as a sum of consecutive naturals, for example, 4629171748 + ... + 4629171771.

Almost surely, 2^111100122228 is an apocalyptic number.

It is an amenable number.

111100122228 is an abundant number, since it is smaller than the sum of its proper divisors (148133496332).

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

111100122228 is a wasteful number, since it uses less digits than its factorization.

111100122228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9258343526 (or 9258343524 counting only the distinct ones).

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

Adding to 111100122228 its reverse (822221001111), we get a palindrome (933321123339).

The spelling of 111100122228 in words is "one hundred eleven billion, one hundred million, one hundred twenty-two thousand, two hundred twenty-eight".