110113021 has 2 divisors, whose sum is σ = 110113022. Its totient is φ = 110113020.

The previous prime is 110113019. The next prime is 110113033. The reversal of 110113021 is 120311011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60621796 + 49491225 = 7786^2 + 7035^2 .

It is an emirp because it is prime and its reverse (120311011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 110113021 - 2¹ = 110113019 is a prime.

Together with 110113019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 110112989 and 110113007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110113001) 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 as a sum of consecutive naturals, namely, 55056510 + 55056511.

It is an arithmetic number, because the mean of its divisors is an integer number (55056511).

Almost surely, 2^110113021 is an apocalyptic number.

It is an amenable number.

110113021 is a deficient number, since it is larger than the sum of its proper divisors (1).

110113021 is an equidigital number, since it uses as much as digits as its factorization.

110113021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 110113021 is about 10493.4751631669. The cubic root of 110113021 is about 479.3060298583.

Adding to 110113021 its reverse (120311011), we get a palindrome (230424032).

The spelling of 110113021 in words is "one hundred ten million, one hundred thirteen thousand, twenty-one".