1101123000209 has 2 divisors, whose sum is σ = 1101123000210. Its totient is φ = 1101123000208.

The previous prime is 1101123000169. The next prime is 1101123000253. The reversal of 1101123000209 is 9020003211011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1041528425809 + 59594574400 = 1020553^2 + 244120^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101123000209 - 2²⁸ = 1100854564753 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1101123000259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550561500104 + 550561500105.

It is an arithmetic number, because the mean of its divisors is an integer number (550561500105).

Almost surely, 2^{1101123000209} is an apocalyptic number.

It is an amenable number.

1101123000209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101123000209 is an equidigital number, since it uses as much as digits as its factorization.

1101123000209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 20.

The spelling of 1101123000209 in words is "one trillion, one hundred one billion, one hundred twenty-three million, two hundred nine", and thus it is an aban number.