1312120123201 has 2 divisors, whose sum is σ = 1312120123202. Its totient is φ = 1312120123200.

The previous prime is 1312120123183. The next prime is 1312120123211. The reversal of 1312120123201 is 1023210212131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 936154937601 + 375965185600 = 967551^2 + 613160^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312120123201 - 2¹¹ = 1312120121153 is a prime.

It is not a weakly prime, because it can be changed into another prime (1312120123211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656060061600 + 656060061601.

It is an arithmetic number, because the mean of its divisors is an integer number (656060061601).

Almost surely, 2^{1312120123201} is an apocalyptic number.

It is an amenable number.

1312120123201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312120123201 is an equidigital number, since it uses as much as digits as its factorization.

1312120123201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1312120123201 its reverse (1023210212131), we get a palindrome (2335330335332).

The spelling of 1312120123201 in words is "one trillion, three hundred twelve billion, one hundred twenty million, one hundred twenty-three thousand, two hundred one".