1312221200312 has 32 divisors (see below), whose sum is σ = 2710663974000. Its totient is φ = 590558592000.

The previous prime is 1312221200293. The next prime is 1312221200351. The reversal of 1312221200312 is 2130021222131.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73810937 + ... + 73828712.

Almost surely, 2^{1312221200312} is an apocalyptic number.

It is an amenable number.

1312221200312 is an abundant number, since it is smaller than the sum of its proper divisors (1398442773688).

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

1312221200312 is a wasteful number, since it uses less digits than its factorization.

1312221200312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147639767 (or 147639763 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1312221200312 its reverse (2130021222131), we get a palindrome (3442242422443).

The spelling of 1312221200312 in words is "one trillion, three hundred twelve billion, two hundred twenty-one million, two hundred thousand, three hundred twelve".