11111111102102 has 8 divisors (see below), whose sum is σ = 18181818167112. Its totient is φ = 5050505046400.

The previous prime is 11111111102057. The next prime is 11111111102137. The reversal of 11111111102102 is 20120111111111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252525252299 + ... + 252525252342.

It is an arithmetic number, because the mean of its divisors is an integer number (2272727270889).

Almost surely, 2^{11111111102102} is an apocalyptic number.

11111111102102 is a deficient number, since it is larger than the sum of its proper divisors (7070707065010).

11111111102102 is a wasteful number, since it uses less digits than its factorization.

11111111102102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505050504654.

The product of its (nonzero) digits is 4, while the sum is 14.

Adding to 11111111102102 its reverse (20120111111111), we get a palindrome (31231222213213).

Subtracting 11111111102102 from its reverse (20120111111111), we obtain a palindrome (9009000009009).

The spelling of 11111111102102 in words is "eleven trillion, one hundred eleven billion, one hundred eleven million, one hundred two thousand, one hundred two".