1298109626123 has 2 divisors, whose sum is σ = 1298109626124. Its totient is φ = 1298109626122.

The previous prime is 1298109626089. The next prime is 1298109626161. The reversal of 1298109626123 is 3216269018921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1298109626123 - 2⁶ = 1298109626059 is a prime.

It is a super-2 number, since 2×1298109626123² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1298109623123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649054813061 + 649054813062.

It is an arithmetic number, because the mean of its divisors is an integer number (649054813062).

Almost surely, 2^{1298109626123} is an apocalyptic number.

1298109626123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1298109626123 is an equidigital number, since it uses as much as digits as its factorization.

1298109626123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 50.

The spelling of 1298109626123 in words is "one trillion, two hundred ninety-eight billion, one hundred nine million, six hundred twenty-six thousand, one hundred twenty-three".