11205305711 has 4 divisors (see below), whose sum is σ = 11222258424. Its totient is φ = 11188353000.

The previous prime is 11205305653. The next prime is 11205305719. The reversal of 11205305711 is 11750350211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11750350211 = 46093 ⋅254927.

It is a cyclic number.

It is not a de Polignac number, because 11205305711 - 2⁶ = 11205305647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11205305719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8475365 + ... + 8476686.

It is an arithmetic number, because the mean of its divisors is an integer number (2805564606).

Almost surely, 2^11205305711 is an apocalyptic number.

11205305711 is a deficient number, since it is larger than the sum of its proper divisors (16952713).

11205305711 is an equidigital number, since it uses as much as digits as its factorization.

11205305711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16952712.

The product of its (nonzero) digits is 1050, while the sum is 26.

Adding to 11205305711 its reverse (11750350211), we get a palindrome (22955655922).

The spelling of 11205305711 in words is "eleven billion, two hundred five million, three hundred five thousand, seven hundred eleven".