11020209173 has 2 divisors, whose sum is σ = 11020209174. Its totient is φ = 11020209172.

The previous prime is 11020209071. The next prime is 11020209197. The reversal of 11020209173 is 37190202011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8807259409 + 2212949764 = 93847^2 + 47042^2 .

It is a cyclic number.

It is not a de Polignac number, because 11020209173 - 2¹⁰ = 11020208149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11020209773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5510104586 + 5510104587.

It is an arithmetic number, because the mean of its divisors is an integer number (5510104587).

Almost surely, 2^11020209173 is an apocalyptic number.

It is an amenable number.

11020209173 is a deficient number, since it is larger than the sum of its proper divisors (1).

11020209173 is an equidigital number, since it uses as much as digits as its factorization.

11020209173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 26.

The spelling of 11020209173 in words is "eleven billion, twenty million, two hundred nine thousand, one hundred seventy-three".