110004021 has 16 divisors (see below), whose sum is σ = 163192320. Its totient is φ = 73235520.

The previous prime is 110004001. The next prime is 110004023. The reversal of 110004021 is 120400011.

It is a happy number.

It is not a de Polignac number, because 110004021 - 2¹¹ = 110001973 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 110003994 and 110004012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110004023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20941 + ... + 25661.

It is an arithmetic number, because the mean of its divisors is an integer number (10199520).

Almost surely, 2^110004021 is an apocalyptic number.

It is an amenable number.

110004021 is a deficient number, since it is larger than the sum of its proper divisors (53188299).

110004021 is an equidigital number, since it uses as much as digits as its factorization.

110004021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5593 (or 5587 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 110004021 is about 10488.2801736033. The cubic root of 110004021 is about 479.1478239076.

Adding to 110004021 its reverse (120400011), we get a palindrome (230404032).

The spelling of 110004021 in words is "one hundred ten million, four thousand, twenty-one".