11011211020309 has 2 divisors, whose sum is σ = 11011211020310. Its totient is φ = 11011211020308.

The previous prime is 11011211020301. The next prime is 11011211020343. The reversal of 11011211020309 is 90302011211011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10554032197809 + 457178822500 = 3248697^2 + 676150^2 .

It is a cyclic number.

It is not a de Polignac number, because 11011211020309 - 2³ = 11011211020301 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11011211020309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11011211020301) 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 as a sum of consecutive naturals, namely, 5505605510154 + 5505605510155.

It is an arithmetic number, because the mean of its divisors is an integer number (5505605510155).

Almost surely, 2^{11011211020309} is an apocalyptic number.

It is an amenable number.

11011211020309 is a deficient number, since it is larger than the sum of its proper divisors (1).

11011211020309 is an equidigital number, since it uses as much as digits as its factorization.

11011211020309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 22.

The spelling of 11011211020309 in words is "eleven trillion, eleven billion, two hundred eleven million, twenty thousand, three hundred nine".