1001000121011 has 8 divisors (see below), whose sum is σ = 1092015772848. Its totient is φ = 909987076000.

The previous prime is 1001000120927. The next prime is 1001000121047. The reversal of 1001000121011 is 1101210001001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1001000121011 - 2²⁶ = 1000933012147 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1001000121011.

It is not an unprimeable number, because it can be changed into a prime (1001000121311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199541 + ... + 1428921.

It is an arithmetic number, because the mean of its divisors is an integer number (136501971606).

Almost surely, 2^{1001000121011} is an apocalyptic number.

1001000121011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1001000121011 is a deficient number, since it is larger than the sum of its proper divisors (91015651837).

1001000121011 is a wasteful number, since it uses less digits than its factorization.

1001000121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303413.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 1001000121011 its reverse (1101210001001), we get a palindrome (2102210122012).

The spelling of 1001000121011 in words is "one trillion, one billion, one hundred twenty-one thousand, eleven".