1000121492511 has 12 divisors (see below), whose sum is σ = 1444844790792. Its totient is φ = 666643881456.

The previous prime is 1000121492497. The next prime is 1000121492537. The reversal of 1000121492511 is 1152941210001.

1000121492511 is a `hidden beast` number, since 1 + 0 + 0 + 0 + 1 + 2 + 149 + 2 + 511 = 666.

It is not a de Polignac number, because 1000121492511 - 2⁵ = 1000121492479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000121492911) 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 in 11 ways as a sum of consecutive naturals, for example, 8587296 + ... + 8702981.

It is an arithmetic number, because the mean of its divisors is an integer number (120403732566).

Almost surely, 2^{1000121492511} is an apocalyptic number.

1000121492511 is a deficient number, since it is larger than the sum of its proper divisors (444723298281).

1000121492511 is a wasteful number, since it uses less digits than its factorization.

1000121492511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17296710 (or 17296707 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 27.

The spelling of 1000121492511 in words is "one trillion, one hundred twenty-one million, four hundred ninety-two thousand, five hundred eleven".