1361261215301 has 4 divisors (see below), whose sum is σ = 1465973616492. Its totient is φ = 1256548814112.

The previous prime is 1361261215289. The next prime is 1361261215319. The reversal of 1361261215301 is 1035121621631.

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 381806589025 + 979454626276 = 617905^2 + 989674^2 .

It is a cyclic number.

It is not a de Polignac number, because 1361261215301 - 2¹⁰ = 1361261214277 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 (1361261215001) 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, 52356200576 + ... + 52356200601.

It is an arithmetic number, because the mean of its divisors is an integer number (366493404123).

Almost surely, 2^{1361261215301} is an apocalyptic number.

It is an amenable number.

1361261215301 is a deficient number, since it is larger than the sum of its proper divisors (104712401191).

1361261215301 is a wasteful number, since it uses less digits than its factorization.

1361261215301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104712401190.

The product of its (nonzero) digits is 6480, while the sum is 32.

Adding to 1361261215301 its reverse (1035121621631), we get a palindrome (2396382836932).

The spelling of 1361261215301 in words is "one trillion, three hundred sixty-one billion, two hundred sixty-one million, two hundred fifteen thousand, three hundred one".