1101121012109 has 4 divisors (see below), whose sum is σ = 1121896880316. Its totient is φ = 1080345143904.

The previous prime is 1101121012081. The next prime is 1101121012111. The reversal of 1101121012109 is 9012101211011.

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 465717529225 + 635403482884 = 682435^2 + 797122^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101121012109 - 2²⁸ = 1100852576653 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 (1101121012609) 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, 10387934024 + ... + 10387934129.

It is an arithmetic number, because the mean of its divisors is an integer number (280474220079).

Almost surely, 2^{1101121012109} is an apocalyptic number.

It is an amenable number.

1101121012109 is a deficient number, since it is larger than the sum of its proper divisors (20775868207).

1101121012109 is an equidigital number, since it uses as much as digits as its factorization.

1101121012109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20775868206.

The product of its (nonzero) digits is 36, while the sum is 20.

The spelling of 1101121012109 in words is "one trillion, one hundred one billion, one hundred twenty-one million, twelve thousand, one hundred nine".