110310021 has 12 divisors (see below), whose sum is σ = 161949580. Its totient is φ = 72334080.

The previous prime is 110310019. The next prime is 110310037. The reversal of 110310021 is 120013011.

It can be written as a sum of positive squares in 2 ways, for example, as 61449921 + 48860100 = 7839^2 + 6990^2 .

It is not a de Polignac number, because 110310021 - 2¹ = 110310019 is a prime.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110309985 and 110310012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110310521) 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, 99916 + ... + 101013.

Almost surely, 2^110310021 is an apocalyptic number.

It is an amenable number.

110310021 is a deficient number, since it is larger than the sum of its proper divisors (51639559).

110310021 is a wasteful number, since it uses less digits than its factorization.

110310021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200996 (or 200993 counting only the distinct ones).

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

The square root of 110310021 is about 10502.8577539639. The cubic root of 110310021 is about 479.5916970541.

Adding to 110310021 its reverse (120013011), we get a palindrome (230323032).

The spelling of 110310021 in words is "one hundred ten million, three hundred ten thousand, twenty-one".