1302311221213 has 2 divisors, whose sum is σ = 1302311221214. Its totient is φ = 1302311221212.

The previous prime is 1302311221199. The next prime is 1302311221217. The reversal of 1302311221213 is 3121221132031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1302070412889 + 240808324 = 1141083^2 + 15518^2 .

It is an emirp because it is prime and its reverse (3121221132031) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1302311221213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1302311221217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 651155610606 + 651155610607.

It is an arithmetic number, because the mean of its divisors is an integer number (651155610607).

Almost surely, 2^{1302311221213} is an apocalyptic number.

It is an amenable number.

1302311221213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1302311221213 is an equidigital number, since it uses as much as digits as its factorization.

1302311221213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1302311221213 its reverse (3121221132031), we get a palindrome (4423532353244).

The spelling of 1302311221213 in words is "one trillion, three hundred two billion, three hundred eleven million, two hundred twenty-one thousand, two hundred thirteen".