1321034231213 has 2 divisors, whose sum is σ = 1321034231214. Its totient is φ = 1321034231212.

The previous prime is 1321034231171. The next prime is 1321034231233. The reversal of 1321034231213 is 3121324301231.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 869662558249 + 451371672964 = 932557^2 + 671842^2 .

It is an emirp because it is prime and its reverse (3121324301231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1321034231213 - 2³⁶ = 1252314754477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1321034231233) 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 as a sum of consecutive naturals, namely, 660517115606 + 660517115607.

It is an arithmetic number, because the mean of its divisors is an integer number (660517115607).

Almost surely, 2^{1321034231213} is an apocalyptic number.

It is an amenable number.

1321034231213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321034231213 is an equidigital number, since it uses as much as digits as its factorization.

1321034231213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 1321034231213 its reverse (3121324301231), we get a palindrome (4442358532444).

The spelling of 1321034231213 in words is "one trillion, three hundred twenty-one billion, thirty-four million, two hundred thirty-one thousand, two hundred thirteen".