1111100111101 has 2 divisors, whose sum is σ = 1111100111102. Its totient is φ = 1111100111100.

The previous prime is 1111100111053. The next prime is 1111100111111. The reversal of 1111100111101 is 1011110011111.

It is a happy number.

It is an a-pointer prime, because the next prime (1111100111111) can be obtained adding 1111100111101 to its sum of digits (10).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 861351048100 + 249749063001 = 928090^2 + 499749^2 .

It is an emirp because it is prime and its reverse (1011110011111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1111100111101 - 2¹³ = 1111100102909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111100111111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555550055550 + 555550055551.

It is an arithmetic number, because the mean of its divisors is an integer number (555550055551).

Almost surely, 2^{1111100111101} is an apocalyptic number.

It is an amenable number.

1111100111101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111100111101 is an equidigital number, since it uses as much as digits as its factorization.

1111100111101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1, while the sum is 10.

Adding to 1111100111101 its reverse (1011110011111), we get a palindrome (2122210122212).

It can be divided in two parts, 111110011110 and 1, that added together give a palindrome (111110011111).

The spelling of 1111100111101 in words is "one trillion, one hundred eleven billion, one hundred million, one hundred eleven thousand, one hundred one".