1310222202221 has 2 divisors, whose sum is σ = 1310222202222. Its totient is φ = 1310222202220.

The previous prime is 1310222202197. The next prime is 1310222202259. The reversal of 1310222202221 is 1222022220131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1252136382121 + 58085820100 = 1118989^2 + 241010^2 .

It is a cyclic number.

It is not a de Polignac number, because 1310222202221 - 2¹⁸ = 1310221940077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1310222202193 and 1310222202202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1310222262221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655111101110 + 655111101111.

It is an arithmetic number, because the mean of its divisors is an integer number (655111101111).

Almost surely, 2^{1310222202221} is an apocalyptic number.

It is an amenable number.

1310222202221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310222202221 is an equidigital number, since it uses as much as digits as its factorization.

1310222202221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 1310222202221 its reverse (1222022220131), we get a palindrome (2532244422352).

The spelling of 1310222202221 in words is "one trillion, three hundred ten billion, two hundred twenty-two million, two hundred two thousand, two hundred twenty-one".