1312230022261 has 2 divisors, whose sum is σ = 1312230022262. Its totient is φ = 1312230022260.

The previous prime is 1312230022193. The next prime is 1312230022283. The reversal of 1312230022261 is 1622200322131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 970952066161 + 341277956100 = 985369^2 + 584190^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312230022261 - 2⁹ = 1312230021749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1312230022861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656115011130 + 656115011131.

It is an arithmetic number, because the mean of its divisors is an integer number (656115011131).

Almost surely, 2^{1312230022261} is an apocalyptic number.

It is an amenable number.

1312230022261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312230022261 is an equidigital number, since it uses as much as digits as its factorization.

1312230022261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 1312230022261 its reverse (1622200322131), we get a palindrome (2934430344392).

The spelling of 1312230022261 in words is "one trillion, three hundred twelve billion, two hundred thirty million, twenty-two thousand, two hundred sixty-one".