1298109626122 has 4 divisors (see below), whose sum is σ = 1947164439186. Its totient is φ = 649054813060.

The previous prime is 1298109626089. The next prime is 1298109626123. The reversal of 1298109626122 is 2216269018921.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 904703443281 + 393406182841 = 951159^2 + 627221^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1298109626123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324527406529 + ... + 324527406532.

Almost surely, 2^{1298109626122} is an apocalyptic number.

1298109626122 is a deficient number, since it is larger than the sum of its proper divisors (649054813064).

1298109626122 is an equidigital number, since it uses as much as digits as its factorization.

1298109626122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649054813063.

The product of its (nonzero) digits is 373248, while the sum is 49.

The spelling of 1298109626122 in words is "one trillion, two hundred ninety-eight billion, one hundred nine million, six hundred twenty-six thousand, one hundred twenty-two".