1000110121021 has 24 divisors (see below), whose sum is σ = 1130263553664. Its totient is φ = 883741320000.

The previous prime is 1000110120983. The next prime is 1000110121069. The reversal of 1000110121021 is 1201210110001.

It is not a de Polignac number, because 1000110121021 - 2²⁵ = 1000076566589 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000110120989 and 1000110121007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000110121321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 972486 + ... + 1716376.

It is an arithmetic number, because the mean of its divisors is an integer number (47094314736).

Almost surely, 2^{1000110121021} is an apocalyptic number.

1000110121021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1000110121021 is a deficient number, since it is larger than the sum of its proper divisors (130153432643).

1000110121021 is a wasteful number, since it uses less digits than its factorization.

1000110121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744225 (or 744214 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1000110121021 its reverse (1201210110001), we get a palindrome (2201320231022).

The spelling of 1000110121021 in words is "one trillion, one hundred ten million, one hundred twenty-one thousand, twenty-one".