1101000111111 has 32 divisors (see below), whose sum is σ = 1723157868800. Its totient is φ = 692858046240.

The previous prime is 1101000111109. The next prime is 1101000111139. The reversal of 1101000111111 is 1111110001011.

It is not a de Polignac number, because 1101000111111 - 2¹ = 1101000111109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1101000111093 and 1101000111102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101000111161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3731905 + ... + 4016106.

It is an arithmetic number, because the mean of its divisors is an integer number (53848683400).

Almost surely, 2^{1101000111111} is an apocalyptic number.

1101000111111 is a deficient number, since it is larger than the sum of its proper divisors (622157757689).

1101000111111 is a wasteful number, since it uses less digits than its factorization.

1101000111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7748316 (or 7748310 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 9.

Adding to 1101000111111 its reverse (1111110001011), we get a palindrome (2212110112122).

The spelling of 1101000111111 in words is "one trillion, one hundred one billion, one hundred eleven thousand, one hundred eleven".