11112111112102 has 144 divisors (see below), whose sum is σ = 22937005450800. Its totient is φ = 3990680628480.

The previous prime is 11112111112087. The next prime is 11112111112133. The reversal of 11112111112102 is 20121111121111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 129124024 + ... + 129210052.

It is an arithmetic number, because the mean of its divisors is an integer number (159284760075).

Almost surely, 2^{11112111112102} is an apocalyptic number.

11112111112102 is an abundant number, since it is smaller than the sum of its proper divisors (11824894338698).

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

11112111112102 is a wasteful number, since it uses less digits than its factorization.

11112111112102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86791 (or 86771 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 11112111112102 its reverse (20121111121111), we get a palindrome (31233222233213).

Subtracting 11112111112102 from its reverse (20121111121111), we obtain a palindrome (9009000009009).

The spelling of 11112111112102 in words is "eleven trillion, one hundred twelve billion, one hundred eleven million, one hundred twelve thousand, one hundred two".