1111001001011 has 8 divisors (see below), whose sum is σ = 1224001104048. Its totient is φ = 1000000900000.

The previous prime is 1111001000971. The next prime is 1111001001013. The reversal of 1111001001011 is 1101001001111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1111001001011 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1111001001011.

It is not an unprimeable number, because it can be changed into a prime (1111001001013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 499999340 + ... + 500001561.

It is an arithmetic number, because the mean of its divisors is an integer number (153000138006).

Almost surely, 2^{1111001001011} is an apocalyptic number.

1111001001011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1111001001011 is a deficient number, since it is larger than the sum of its proper divisors (113000103037).

1111001001011 is a wasteful number, since it uses less digits than its factorization.

1111001001011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000001013.

The product of its (nonzero) digits is 1, while the sum is 8.

Adding to 1111001001011 its reverse (1101001001111), we get a palindrome (2212002002122).

It can be divided in two parts, 111100100 and 1011, that added together give a palindrome (111101111).

The spelling of 1111001001011 in words is "one trillion, one hundred eleven billion, one million, one thousand, eleven".