1310210322221 has 2 divisors, whose sum is σ = 1310210322222. Its totient is φ = 1310210322220.

The previous prime is 1310210322101. The next prime is 1310210322271. The reversal of 1310210322221 is 1222230120131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1308996844996 + 1213477225 = 1144114^2 + 34835^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1310210322221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1310210322193 and 1310210322202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1310210322271) 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, 655105161110 + 655105161111.

It is an arithmetic number, because the mean of its divisors is an integer number (655105161111).

Almost surely, 2^{1310210322221} is an apocalyptic number.

It is an amenable number.

1310210322221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310210322221 is an equidigital number, since it uses as much as digits as its factorization.

1310210322221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1310210322221 its reverse (1222230120131), we get a palindrome (2532440442352).

The spelling of 1310210322221 in words is "one trillion, three hundred ten billion, two hundred ten million, three hundred twenty-two thousand, two hundred twenty-one".