110002021 has 4 divisors (see below), whose sum is σ = 111508972. Its totient is φ = 108495072.

The previous prime is 110002003. The next prime is 110002033. The reversal of 110002021 is 120200011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 80299521 + 29702500 = 8961^2 + 5450^2 .

It is a cyclic number.

It is not a de Polignac number, because 110002021 - 2⁵ = 110001989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110001995 and 110002013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110002051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 753366 + ... + 753511.

It is an arithmetic number, because the mean of its divisors is an integer number (27877243).

Almost surely, 2^110002021 is an apocalyptic number.

It is an amenable number.

110002021 is a deficient number, since it is larger than the sum of its proper divisors (1506951).

110002021 is an equidigital number, since it uses as much as digits as its factorization.

110002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506950.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 110002021 is about 10488.1848286536. The cubic root of 110002021 is about 479.1449200700.

Adding to 110002021 its reverse (120200011), we get a palindrome (230202032).

The spelling of 110002021 in words is "one hundred ten million, two thousand, twenty-one".