111102021021108 has 48 divisors (see below), whose sum is σ = 279180341470016. Its totient is φ = 34185126539520.

The previous prime is 111102021021091. The next prime is 111102021021137. The reversal of 111102021021108 is 801120120201111.

It is a congruent number.

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, 56332635 + ... + 58271517.

Almost surely, 2^{111102021021108} is an apocalyptic number.

It is an amenable number.

111102021021108 is an abundant number, since it is smaller than the sum of its proper divisors (168078320448908).

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

111102021021108 is a wasteful number, since it uses less digits than its factorization.

111102021021108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2306224 (or 2306222 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 21.

Adding to 111102021021108 its reverse (801120120201111), we get a palindrome (912222141222219).

The spelling of 111102021021108 in words is "one hundred eleven trillion, one hundred two billion, twenty-one million, twenty-one thousand, one hundred eight".