1302021331213 has 2 divisors, whose sum is σ = 1302021331214. Its totient is φ = 1302021331212.

The previous prime is 1302021331157. The next prime is 1302021331223. The reversal of 1302021331213 is 3121331202031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1301782875849 + 238455364 = 1140957^2 + 15442^2 .

It is a cyclic number.

It is not a de Polignac number, because 1302021331213 - 2¹⁷ = 1302021200141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1302021331223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 651010665606 + 651010665607.

It is an arithmetic number, because the mean of its divisors is an integer number (651010665607).

Almost surely, 2^{1302021331213} is an apocalyptic number.

It is an amenable number.

1302021331213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1302021331213 is an equidigital number, since it uses as much as digits as its factorization.

1302021331213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1302021331213 its reverse (3121331202031), we get a palindrome (4423352533244).

The spelling of 1302021331213 in words is "one trillion, three hundred two billion, twenty-one million, three hundred thirty-one thousand, two hundred thirteen".