1321134054413 has 2 divisors, whose sum is σ = 1321134054414. Its totient is φ = 1321134054412.

The previous prime is 1321134054319. The next prime is 1321134054433. The reversal of 1321134054413 is 3144504311231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1295947729609 + 25186324804 = 1138397^2 + 158702^2 .

It is an emirp because it is prime and its reverse (3144504311231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1321134054413 - 2⁸ = 1321134054157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1321134054413.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1321134054433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660567027206 + 660567027207.

It is an arithmetic number, because the mean of its divisors is an integer number (660567027207).

Almost surely, 2^{1321134054413} is an apocalyptic number.

It is an amenable number.

1321134054413 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321134054413 is an equidigital number, since it uses as much as digits as its factorization.

1321134054413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 1321134054413 its reverse (3144504311231), we get a palindrome (4465638365644).

The spelling of 1321134054413 in words is "one trillion, three hundred twenty-one billion, one hundred thirty-four million, fifty-four thousand, four hundred thirteen".