1311211112 has 16 divisors (see below), whose sum is σ = 2458922400. Its totient is φ = 655498480.

The previous prime is 1311211079. The next prime is 1311211157. The reversal of 1311211112 is 2111121131.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67187 + ... + 84477.

It is an arithmetic number, because the mean of its divisors is an integer number (153682650).

Almost surely, 2^1311211112 is an apocalyptic number.

It is an amenable number.

1311211112 is a deficient number, since it is larger than the sum of its proper divisors (1147711288).

1311211112 is a wasteful number, since it uses less digits than its factorization.

1311211112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26776 (or 26772 counting only the distinct ones).

The product of its digits is 12, while the sum is 14.

The square root of 1311211112 is about 36210.6491518724. The cubic root of 1311211112 is about 1094.5212733279.

Adding to 1311211112 its reverse (2111121131), we get a palindrome (3422332243).

The spelling of 1311211112 in words is "one billion, three hundred eleven million, two hundred eleven thousand, one hundred twelve".