111001001101 has 12 divisors (see below), whose sum is σ = 117956707828. Its totient is φ = 104434186752.

The previous prime is 111001001081. The next prime is 111001001117. The reversal of 111001001101 is 101100100111.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 23993700201 + 87007300900 = 154899^2 + 294970^2 .

It is not a de Polignac number, because 111001001101 - 2⁷ = 111001000973 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 (111001001161) 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 11 ways as a sum of consecutive naturals, for example, 758455 + ... + 892891.

Almost surely, 2^111001001101 is an apocalyptic number.

It is an amenable number.

111001001101 is a deficient number, since it is larger than the sum of its proper divisors (6955706727).

111001001101 is a wasteful number, since it uses less digits than its factorization.

111001001101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137328 (or 137311 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 7.

Adding to 111001001101 its reverse (101100100111), we get a palindrome (212101101212).

It can be divided in two parts, 11100100110 and 1, that added together give a palindrome (11100100111).

The spelling of 111001001101 in words is "one hundred eleven billion, one million, one thousand, one hundred one".