1111001101011 has 12 divisors (see below), whose sum is σ = 1605199187488. Its totient is φ = 740473637904.

The previous prime is 1111001101003. The next prime is 1111001101019. The reversal of 1111001101011 is 1101011001111.

It is an interprime number because it is at equal distance from previous prime (1111001101003) and next prime (1111001101019).

It is not a de Polignac number, because 1111001101011 - 2³ = 1111001101003 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 = 1111001100984 and 1111001101002.

It is not an unprimeable number, because it can be changed into a prime (1111001101019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16110580 + ... + 16179393.

Almost surely, 2^{1111001101011} is an apocalyptic number.

1111001101011 is a deficient number, since it is larger than the sum of its proper divisors (494198086477).

1111001101011 is a wasteful number, since it uses less digits than its factorization.

1111001101011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32293802 (or 32293799 counting only the distinct ones).

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

Adding to 1111001101011 its reverse (1101011001111), we get a palindrome (2212012102122).

The spelling of 1111001101011 in words is "one trillion, one hundred eleven billion, one million, one hundred one thousand, eleven".