1101202011209 has 4 divisors (see below), whose sum is σ = 1101238084116. Its totient is φ = 1101165938304.

The previous prime is 1101202011187. The next prime is 1101202011233. The reversal of 1101202011209 is 9021102021011.

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 86669593609 + 1014532417600 = 294397^2 + 1007240^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101202011209 - 2³² = 1096907043913 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1101202041209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17990624 + ... + 18051729.

It is an arithmetic number, because the mean of its divisors is an integer number (275309521029).

Almost surely, 2^{1101202011209} is an apocalyptic number.

It is an amenable number.

1101202011209 is a deficient number, since it is larger than the sum of its proper divisors (36072907).

1101202011209 is an equidigital number, since it uses as much as digits as its factorization.

1101202011209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36072906.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 1101202011209 in words is "one trillion, one hundred one billion, two hundred two million, eleven thousand, two hundred nine".