110000120021 has 12 divisors (see below), whose sum is σ = 121155539232. Its totient is φ = 99796389000.

The previous prime is 110000120003. The next prime is 110000120047. The reversal of 110000120021 is 120021000011.

It is not a de Polignac number, because 110000120021 - 2¹⁰ = 110000118997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110000119990 and 110000120008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110000120051) 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, 866345 + ... + 985166.

It is an arithmetic number, because the mean of its divisors is an integer number (10096294936).

Almost surely, 2^110000120021 is an apocalyptic number.

110000120021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

110000120021 is a deficient number, since it is larger than the sum of its proper divisors (11155419211).

110000120021 is a wasteful number, since it uses less digits than its factorization.

110000120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1852024 (or 1852013 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 110000120021 its reverse (120021000011), we get a palindrome (230021120032).

The spelling of 110000120021 in words is "one hundred ten billion, one hundred twenty thousand, twenty-one".