1312312011212 has 12 divisors (see below), whose sum is σ = 2330822826360. Its totient is φ = 646362632256.

The previous prime is 1312312011211. The next prime is 1312312011229. The reversal of 1312312011212 is 2121102132131.

It is not an unprimeable number, because it can be changed into a prime (1312312011211) 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, 2448343037 + ... + 2448343572.

It is an arithmetic number, because the mean of its divisors is an integer number (194235235530).

Almost surely, 2^{1312312011212} is an apocalyptic number.

It is an amenable number.

1312312011212 is a deficient number, since it is larger than the sum of its proper divisors (1018510815148).

1312312011212 is a wasteful number, since it uses less digits than its factorization.

1312312011212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4896686680 (or 4896686678 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1312312011212 its reverse (2121102132131), we get a palindrome (3433414143343).

The spelling of 1312312011212 in words is "one trillion, three hundred twelve billion, three hundred twelve million, eleven thousand, two hundred twelve".