1231322130001 has 2 divisors, whose sum is σ = 1231322130002. Its totient is φ = 1231322130000.

The previous prime is 1231322129987. The next prime is 1231322130023. The reversal of 1231322130001 is 1000312231321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 949063691601 + 282258438400 = 974199^2 + 531280^2 .

It is a cyclic number.

It is not a de Polignac number, because 1231322130001 - 2⁹ = 1231322129489 is a prime.

It is not a weakly prime, because it can be changed into another prime (1231322131001) 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, 615661065000 + 615661065001.

It is an arithmetic number, because the mean of its divisors is an integer number (615661065001).

Almost surely, 2^{1231322130001} is an apocalyptic number.

It is an amenable number.

1231322130001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231322130001 is an equidigital number, since it uses as much as digits as its factorization.

1231322130001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1231322130001 its reverse (1000312231321), we get a palindrome (2231634361322).

The spelling of 1231322130001 in words is "one trillion, two hundred thirty-one billion, three hundred twenty-two million, one hundred thirty thousand, one".