11111112102 has 16 divisors (see below), whose sum is σ = 22234681152. Its totient is φ = 3701627880.

The previous prime is 11111112091. The next prime is 11111112157. The reversal of 11111112102 is 20121111111.

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, 507424 + ... + 528867.

It is an arithmetic number, because the mean of its divisors is an integer number (1389667572).

Almost surely, 2^11111112102 is an apocalyptic number.

11111112102 is an abundant number, since it is smaller than the sum of its proper divisors (11123569050).

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

11111112102 is a wasteful number, since it uses less digits than its factorization.

11111112102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1038083.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 11111112102 its reverse (20121111111), we get a palindrome (31232223213).

Subtracting 11111112102 from its reverse (20121111111), we obtain a palindrome (9009999009).

The spelling of 11111112102 in words is "eleven billion, one hundred eleven million, one hundred twelve thousand, one hundred two".