1000121019975 has 288 divisors, whose sum is σ = 2259905356800. Its totient is φ = 414140601600.

The previous prime is 1000121019943. The next prime is 1000121020027. The reversal of 1000121019975 is 5799101210001.

It is not a de Polignac number, because 1000121019975 - 2⁵ = 1000121019943 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 731616742 + ... + 731618108.

It is an arithmetic number, because the mean of its divisors is an integer number (7846893600).

Almost surely, 2^{1000121019975} is an apocalyptic number.

1000121019975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1000121019975 is an abundant number, since it is smaller than the sum of its proper divisors (1259784336825).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1000121019975 is a wasteful number, since it uses less digits than its factorization.

1000121019975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1772 (or 1742 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 36.

Adding to 1000121019975 its reverse (5799101210001), we get a palindrome (6799222229976).

The spelling of 1000121019975 in words is "one trillion, one hundred twenty-one million, nineteen thousand, nine hundred seventy-five".