110130021 has 6 divisors (see below), whose sum is σ = 159076710. Its totient is φ = 73420008.

The previous prime is 110130001. The next prime is 110130047. The reversal of 110130021 is 120031011.

It can be written as a sum of positive squares in only one way, i.e., 55577025 + 54552996 = 7455^2 + 7386^2 .

It is not a de Polignac number, because 110130021 - 2¹¹ = 110127973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 12236669 = 110130021 / (1 + 1 + 0 + 1 + 3 + 0 + 0 + 2 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 110129985 and 110130012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110130001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6118326 + ... + 6118343.

It is an arithmetic number, because the mean of its divisors is an integer number (26512785).

Almost surely, 2^110130021 is an apocalyptic number.

It is an amenable number.

110130021 is a deficient number, since it is larger than the sum of its proper divisors (48946689).

110130021 is a wasteful number, since it uses less digits than its factorization.

110130021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12236675 (or 12236672 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 110130021 is about 10494.2851590759. The cubic root of 110130021 is about 479.3306947682.

Adding to 110130021 its reverse (120031011), we get a palindrome (230161032).

The spelling of 110130021 in words is "one hundred ten million, one hundred thirty thousand, twenty-one".