1101111001111 has 8 divisors (see below), whose sum is σ = 1203323101200.
Its totient is φ = 999250751040.
The previous prime is 1101111001099. The next prime is 1101111001139. The reversal of 1101111001111 is 1111001111011.
Adding to 1101111001111 its reverse (1111001111011), we get a palindrome (2212112112122).
It is a happy number.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 1101111001111 - 29 = 1101111000599 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1101111701111) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87955956 + ... + 87968473.
It is an arithmetic number, because the mean of its divisors is an integer number (150415387650).
Almost surely, 21101111001111 is an apocalyptic number.
1101111001111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.
1101111001111 is a deficient number, since it is larger than the sum of its proper divisors (102212100089).
1101111001111 is a wasteful number, since it uses less digits than its factorization.
1101111001111 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 175925009.
The product of its (nonzero) digits is 1, while the sum is 10.
The spelling of 1101111001111 in words is "one trillion, one hundred one billion, one hundred eleven million, one thousand, one hundred eleven".