1001001110121 has 12 divisors (see below), whose sum is σ = 1492532121600. Its totient is φ = 645807167640.

The previous prime is 1001001110117. The next prime is 1001001110189. The reversal of 1001001110121 is 1210111001001.

It is not a de Polignac number, because 1001001110121 - 2² = 1001001110117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1001001120121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1793908521 + ... + 1793909078.

It is an arithmetic number, because the mean of its divisors is an integer number (124377676800).

Almost surely, 2^{1001001110121} is an apocalyptic number.

It is an amenable number.

1001001110121 is a deficient number, since it is larger than the sum of its proper divisors (491531011479).

1001001110121 is a wasteful number, since it uses less digits than its factorization.

1001001110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3587817636 (or 3587817633 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 1001001110121 its reverse (1210111001001), we get a palindrome (2211112111122).

The spelling of 1001001110121 in words is "one trillion, one billion, one million, one hundred ten thousand, one hundred twenty-one".