1311210212 has 12 divisors (see below), whose sum is σ = 2471127036. Its totient is φ = 605173920.

The previous prime is 1311210169. The next prime is 1311210239. The reversal of 1311210212 is 2120121131.

It can be written as a sum of positive squares in 2 ways, for example, as 84529636 + 1226680576 = 9194^2 + 35024^2 .

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, 12607739 + ... + 12607842.

It is an arithmetic number, because the mean of its divisors is an integer number (205927253).

Almost surely, 2^1311210212 is an apocalyptic number.

It is an amenable number.

1311210212 is a deficient number, since it is larger than the sum of its proper divisors (1159916824).

1311210212 is a wasteful number, since it uses less digits than its factorization.

1311210212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25215598 (or 25215596 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1311210212 is about 36210.6367245869. The cubic root of 1311210212 is about 1094.5210229056.

Adding to 1311210212 its reverse (2120121131), we get a palindrome (3431331343).

The spelling of 1311210212 in words is "one billion, three hundred eleven million, two hundred ten thousand, two hundred twelve".