1361222305213 has 8 divisors (see below), whose sum is σ = 1387981769400. Its totient is φ = 1334502693888.

The previous prime is 1361222305211. The next prime is 1361222305241. The reversal of 1361222305213 is 3125032221631.

It can be written as a sum of positive squares in 4 ways, for example, as 996566951524 + 364655353689 = 998282^2 + 603867^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1361222305213 - 2¹ = 1361222305211 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 (1361222305211) 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 7 ways as a sum of consecutive naturals, for example, 9894228 + ... + 10030861.

It is an arithmetic number, because the mean of its divisors is an integer number (173497721175).

Almost surely, 2^{1361222305213} is an apocalyptic number.

It is an amenable number.

1361222305213 is a deficient number, since it is larger than the sum of its proper divisors (26759464187).

1361222305213 is a wasteful number, since it uses less digits than its factorization.

1361222305213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19926431.

The product of its (nonzero) digits is 12960, while the sum is 31.

Adding to 1361222305213 its reverse (3125032221631), we get a palindrome (4486254526844).

The spelling of 1361222305213 in words is "one trillion, three hundred sixty-one billion, two hundred twenty-two million, three hundred five thousand, two hundred thirteen".