1312200021301 has 4 divisors (see below), whose sum is σ = 1413138484492. Its totient is φ = 1211261558112.

The previous prime is 1312200021289. The next prime is 1312200021347. The reversal of 1312200021301 is 1031200022131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 574069890276 + 738130131025 = 757674^2 + 859145^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312200021301 - 2⁷ = 1312200021173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312200021901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50469231576 + ... + 50469231601.

It is an arithmetic number, because the mean of its divisors is an integer number (353284621123).

Almost surely, 2^{1312200021301} is an apocalyptic number.

It is an amenable number.

1312200021301 is a deficient number, since it is larger than the sum of its proper divisors (100938463191).

1312200021301 is a wasteful number, since it uses less digits than its factorization.

1312200021301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100938463190.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1312200021301 its reverse (1031200022131), we get a palindrome (2343400043432).

The spelling of 1312200021301 in words is "one trillion, three hundred twelve billion, two hundred million, twenty-one thousand, three hundred one".