1101101011111 has 4 divisors (see below), whose sum is σ = 1101103146000. Its totient is φ = 1101098876224.

The previous prime is 1101101011099. The next prime is 1101101011123. The reversal of 1101101011111 is 1111101011011.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (1101101011099) and next prime (1101101011123).

It is a cyclic number.

It is not a de Polignac number, because 1101101011111 - 2²³ = 1101092622503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101101011141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240030 + ... + 1503268.

It is an arithmetic number, because the mean of its divisors is an integer number (275275786500).

Almost surely, 2^{1101101011111} is an apocalyptic number.

1101101011111 is a deficient number, since it is larger than the sum of its proper divisors (2134889).

1101101011111 is an equidigital number, since it uses as much as digits as its factorization.

1101101011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2134888.

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

Adding to 1101101011111 its reverse (1111101011011), we get a palindrome (2212202022122).

The spelling of 1101101011111 in words is "one trillion, one hundred one billion, one hundred one million, eleven thousand, one hundred eleven".