1001100121109 has 4 divisors (see below), whose sum is σ = 1092109223040. Its totient is φ = 910091019180.

The previous prime is 1001100121069. The next prime is 1001100121111. The reversal of 1001100121109 is 9011210011001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1001100121109 - 2²⁸ = 1000831685653 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001100121139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45504550949 + ... + 45504550970.

It is an arithmetic number, because the mean of its divisors is an integer number (273027305760).

Almost surely, 2^{1001100121109} is an apocalyptic number.

It is an amenable number.

1001100121109 is a deficient number, since it is larger than the sum of its proper divisors (91009101931).

1001100121109 is an equidigital number, since it uses as much as digits as its factorization.

1001100121109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91009101930.

The product of its (nonzero) digits is 18, while the sum is 17.

The spelling of 1001100121109 in words is "one trillion, one billion, one hundred million, one hundred twenty-one thousand, one hundred nine".