1316041313221 has 4 divisors (see below), whose sum is σ = 1316155495072. Its totient is φ = 1315927131372.

The previous prime is 1316041313219. The next prime is 1316041313267. The reversal of 1316041313221 is 1223131406131.

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 1316041313221 - 2¹ = 1316041313219 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1316041313221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316041313281) 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, 57073635 + ... + 57096688.

It is an arithmetic number, because the mean of its divisors is an integer number (329038873768).

Almost surely, 2^{1316041313221} is an apocalyptic number.

It is an amenable number.

1316041313221 is a deficient number, since it is larger than the sum of its proper divisors (114181851).

1316041313221 is a wasteful number, since it uses less digits than its factorization.

1316041313221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114181850.

The product of its (nonzero) digits is 2592, while the sum is 28.

Adding to 1316041313221 its reverse (1223131406131), we get a palindrome (2539172719352).

The spelling of 1316041313221 in words is "one trillion, three hundred sixteen billion, forty-one million, three hundred thirteen thousand, two hundred twenty-one".