11111111111102 has 4 divisors (see below), whose sum is σ = 16666666666656. Its totient is φ = 5555555555550.

The previous prime is 11111111111053. The next prime is 11111111111123. The reversal of 11111111111102 is 20111111111111.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2777777777774 + ... + 2777777777777.

It is an arithmetic number, because the mean of its divisors is an integer number (4166666666664).

Almost surely, 2^{11111111111102} is an apocalyptic number.

11111111111102 is a deficient number, since it is larger than the sum of its proper divisors (5555555555554).

11111111111102 is an equidigital number, since it uses as much as digits as its factorization.

11111111111102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5555555555553.

The product of its (nonzero) digits is 2, while the sum is 14.

Adding to 11111111111102 its reverse (20111111111111), we get a palindrome (31222222222213).

Subtracting 11111111111102 from its reverse (20111111111111), we obtain a palindrome (9000000000009).

The spelling of 11111111111102 in words is "eleven trillion, one hundred eleven billion, one hundred eleven million, one hundred eleven thousand, one hundred two".