1312211313012 has 24 divisors (see below), whose sum is σ = 3085199121312. Its totient is φ = 434064810400.

The previous prime is 1312211313011. The next prime is 1312211313013. The reversal of 1312211313012 is 2103131122131.

It is an interprime number because it is at equal distance from previous prime (1312211313011) and next prime (1312211313013).

It is a self number, because there is not a number n which added to its sum of digits gives 1312211313012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312211313011) 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, 417368439 + ... + 417371582.

It is an arithmetic number, because the mean of its divisors is an integer number (128549963388).

Almost surely, 2^{1312211313012} is an apocalyptic number.

1312211313012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1312211313012 is an abundant number, since it is smaller than the sum of its proper divisors (1772987808300).

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

1312211313012 is a wasteful number, since it uses less digits than its factorization.

1312211313012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834740159 (or 834740157 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1312211313012 its reverse (2103131122131), we get a palindrome (3415342435143).

The spelling of 1312211313012 in words is "one trillion, three hundred twelve billion, two hundred eleven million, three hundred thirteen thousand, twelve".