1001110121021 has 8 divisors (see below), whose sum is σ = 1002791424864. Its totient is φ = 999429322320.

The previous prime is 1001110121017. The next prime is 1001110121057. The reversal of 1001110121021 is 1201210111001.

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 1001110121021 - 2² = 1001110121017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1001110120993 and 1001110121011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001110121321) 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 7 ways as a sum of consecutive naturals, for example, 3950870 + ... + 4196616.

It is an arithmetic number, because the mean of its divisors is an integer number (125348928108).

Almost surely, 2^{1001110121021} is an apocalyptic number.

It is an amenable number.

1001110121021 is a deficient number, since it is larger than the sum of its proper divisors (1681303843).

1001110121021 is an equidigital number, since it uses as much as digits as its factorization.

1001110121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252571.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1001110121021 its reverse (1201210111001), we get a palindrome (2202320232022).

The spelling of 1001110121021 in words is "one trillion, one billion, one hundred ten million, one hundred twenty-one thousand, twenty-one".