110011011001 has 4 divisors (see below), whose sum is σ = 110022132004. Its totient is φ = 109999890000.

The previous prime is 110011010999. The next prime is 110011011007. The reversal of 110011011001 is 100110110011.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 107702112400 + 2308898601 = 328180^2 + 48051^2 .

It is a cyclic number.

It is not a de Polignac number, because 110011011001 - 2¹ = 110011010999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (110011011007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5545650 + ... + 5565451.

It is an arithmetic number, because the mean of its divisors is an integer number (27505533001).

Almost surely, 2^110011011001 is an apocalyptic number.

It is an amenable number.

110011011001 is a deficient number, since it is larger than the sum of its proper divisors (11121003).

110011011001 is an equidigital number, since it uses as much as digits as its factorization.

110011011001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11121002.

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

Adding to 110011011001 its reverse (100110110011), we get a palindrome (210121121012).

It can be divided in two parts, 1100110 and 11001, that added together give a palindrome (1111111).

The spelling of 110011011001 in words is "one hundred ten billion, eleven million, eleven thousand, one".