1209110109079 has 2 divisors, whose sum is σ = 1209110109080. Its totient is φ = 1209110109078.

The previous prime is 1209110108939. The next prime is 1209110109083. The reversal of 1209110109079 is 9709010119021.

It is a strong prime.

It is an emirp because it is prime and its reverse (9709010119021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1209110109079 - 2¹⁵ = 1209110076311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1209110169079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 604555054539 + 604555054540.

It is an arithmetic number, because the mean of its divisors is an integer number (604555054540).

Almost surely, 2^{1209110109079} is an apocalyptic number.

1209110109079 is a deficient number, since it is larger than the sum of its proper divisors (1).

1209110109079 is an equidigital number, since it uses as much as digits as its factorization.

1209110109079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10206, while the sum is 40.

The spelling of 1209110109079 in words is "one trillion, two hundred nine billion, one hundred ten million, one hundred nine thousand, seventy-nine".