111008100028 has 24 divisors (see below), whose sum is σ = 222027865472. Its totient is φ = 47572400304.

The previous prime is 111008100019. The next prime is 111008100067. The reversal of 111008100028 is 820001800111.

It is a junction number, because it is equal to n+sod(n) for n = 111008099981 and 111008100008.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 499675 + ... + 686797.

Almost surely, 2^111008100028 is an apocalyptic number.

It is an amenable number.

111008100028 is an abundant number, since it is smaller than the sum of its proper divisors (111019765444).

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

111008100028 is a wasteful number, since it uses less digits than its factorization.

111008100028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208321 (or 208319 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 22.

Adding to 111008100028 its reverse (820001800111), we get a palindrome (931009900139).

The spelling of 111008100028 in words is "one hundred eleven billion, eight million, one hundred thousand, twenty-eight".