11212316611 has 4 divisors (see below), whose sum is σ = 11215172824. Its totient is φ = 11209460400.

The previous prime is 11212316597. The next prime is 11212316627. The reversal of 11212316611 is 11661321211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11661321211 = 347 ⋅33606113.

It is a cyclic number.

It is not a de Polignac number, because 11212316611 - 2¹⁹ = 11211792323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11212316111) 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 in 3 ways as a sum of consecutive naturals, for example, 1422210 + ... + 1430071.

It is an arithmetic number, because the mean of its divisors is an integer number (2803793206).

Almost surely, 2^11212316611 is an apocalyptic number.

11212316611 is a deficient number, since it is larger than the sum of its proper divisors (2856213).

11212316611 is an equidigital number, since it uses as much as digits as its factorization.

11212316611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2856212.

The product of its digits is 432, while the sum is 25.

Adding to 11212316611 its reverse (11661321211), we get a palindrome (22873637822).

The spelling of 11212316611 in words is "eleven billion, two hundred twelve million, three hundred sixteen thousand, six hundred eleven".