11111111211306 has 16 divisors (see below), whose sum is σ = 22222257120000. Its totient is φ = 3703697954208.

The previous prime is 11111111211293. The next prime is 11111111211307. The reversal of 11111111211306 is 60311211111111.

It is not an unprimeable number, because it can be changed into a prime (11111111211307) 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 7 ways as a sum of consecutive naturals, for example, 4778670 + ... + 6712518.

It is an arithmetic number, because the mean of its divisors is an integer number (1388891070000).

Almost surely, 2^{11111111211306} is an apocalyptic number.

11111111211306 is an abundant number, since it is smaller than the sum of its proper divisors (11111145908694).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11111111211306 is a wasteful number, since it uses less digits than its factorization.

11111111211306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2891453.

The product of its (nonzero) digits is 36, while the sum is 21.

Adding to 11111111211306 its reverse (60311211111111), we get a palindrome (71422322322417).

The spelling of 11111111211306 in words is "eleven trillion, one hundred eleven billion, one hundred eleven million, two hundred eleven thousand, three hundred six".