11111100102 has 64 divisors (see below), whose sum is σ = 25130534400. Its totient is φ = 3637988640.

The previous prime is 11111100089. The next prime is 11111100137. The reversal of 11111100102 is 20100111111.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2985799 + ... + 2989517.

It is an arithmetic number, because the mean of its divisors is an integer number (392664600).

Almost surely, 2^11111100102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11111100102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12565267200).

11111100102 is an abundant number, since it is smaller than the sum of its proper divisors (14019434298).

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

11111100102 is a wasteful number, since it uses less digits than its factorization.

11111100102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4698 (or 4692 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 11111100102 its reverse (20100111111), we get a palindrome (31211211213).

The spelling of 11111100102 in words is "eleven billion, one hundred eleven million, one hundred thousand, one hundred two".