1101100561611 has 4 divisors (see below), whose sum is σ = 1468134082152. Its totient is φ = 734067041072.

The previous prime is 1101100561571. The next prime is 1101100561621. The reversal of 1101100561611 is 1161650011011.

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

It is a cyclic number.

It is not a de Polignac number, because 1101100561611 - 2¹¹ = 1101100559563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1101100561621) 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 3 ways as a sum of consecutive naturals, for example, 183516760266 + ... + 183516760271.

It is an arithmetic number, because the mean of its divisors is an integer number (367033520538).

Almost surely, 2^{1101100561611} is an apocalyptic number.

1101100561611 is a deficient number, since it is larger than the sum of its proper divisors (367033520541).

1101100561611 is an equidigital number, since it uses as much as digits as its factorization.

1101100561611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367033520540.

The product of its (nonzero) digits is 180, while the sum is 24.

Adding to 1101100561611 its reverse (1161650011011), we get a palindrome (2262750572622).

The spelling of 1101100561611 in words is "one trillion, one hundred one billion, one hundred million, five hundred sixty-one thousand, six hundred eleven".