1312120133123 has 2 divisors, whose sum is σ = 1312120133124. Its totient is φ = 1312120133122.

The previous prime is 1312120133101. The next prime is 1312120133161. The reversal of 1312120133123 is 3213310212131.

It is a weak prime.

It is an emirp because it is prime and its reverse (3213310212131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1312120133123 - 2⁶ = 1312120133059 is a prime.

It is not a weakly prime, because it can be changed into another prime (1312120433123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656060066561 + 656060066562.

It is an arithmetic number, because the mean of its divisors is an integer number (656060066562).

Almost surely, 2^{1312120133123} is an apocalyptic number.

1312120133123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312120133123 is an equidigital number, since it uses as much as digits as its factorization.

1312120133123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1312120133123 its reverse (3213310212131), we get a palindrome (4525430345254).

The spelling of 1312120133123 in words is "one trillion, three hundred twelve billion, one hundred twenty million, one hundred thirty-three thousand, one hundred twenty-three".