1000121011111 has 16 divisors (see below), whose sum is σ = 1016349108768. Its totient is φ = 984063600000.

The previous prime is 1000121011063. The next prime is 1000121011147. The reversal of 1000121011111 is 1111101210001.

It is a cyclic number.

It is not a de Polignac number, because 1000121011111 - 2¹⁷ = 1000120880039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000121011511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6744061 + ... + 6890761.

It is an arithmetic number, because the mean of its divisors is an integer number (63521819298).

Almost surely, 2^{1000121011111} is an apocalyptic number.

1000121011111 is a deficient number, since it is larger than the sum of its proper divisors (16228097657).

1000121011111 is a wasteful number, since it uses less digits than its factorization.

1000121011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147282.

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 1000121011111 its reverse (1111101210001), we get a palindrome (2111222221112).

The spelling of 1000121011111 in words is "one trillion, one hundred twenty-one million, eleven thousand, one hundred eleven".