1312311212201 has 4 divisors (see below), whose sum is σ = 1431612231504. Its totient is φ = 1193010192900.

The previous prime is 1312311212183. The next prime is 1312311212297. The reversal of 1312311212201 is 1022121132131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1312311212201 - 2¹⁰ = 1312311211177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312311212701) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 59650509635 + ... + 59650509656.

It is an arithmetic number, because the mean of its divisors is an integer number (357903057876).

Almost surely, 2^{1312311212201} is an apocalyptic number.

1312311212201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1312311212201 is a deficient number, since it is larger than the sum of its proper divisors (119301019303).

1312311212201 is a wasteful number, since it uses less digits than its factorization.

1312311212201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119301019302.

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

Adding to 1312311212201 its reverse (1022121132131), we get a palindrome (2334432344332).

The spelling of 1312311212201 in words is "one trillion, three hundred twelve billion, three hundred eleven million, two hundred twelve thousand, two hundred one".