210120113 has 4 divisors (see below), whose sum is σ = 240137280. Its totient is φ = 180102948.

The previous prime is 210120101. The next prime is 210120133. The reversal of 210120113 is 311021012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 210120113 - 2⁸ = 210119857 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210120094 and 210120103.

It is not an unprimeable number, because it can be changed into a prime (210120133) 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 3 ways as a sum of consecutive naturals, for example, 15008573 + ... + 15008586.

It is an arithmetic number, because the mean of its divisors is an integer number (60034320).

Almost surely, 2^210120113 is an apocalyptic number.

It is an amenable number.

210120113 is a deficient number, since it is larger than the sum of its proper divisors (30017167).

210120113 is an equidigital number, since it uses as much as digits as its factorization.

210120113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30017166.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 210120113 is about 14495.5204459861. The cubic root of 210120113 is about 594.5054978515.

Adding to 210120113 its reverse (311021012), we get a palindrome (521141125).

The spelling of 210120113 in words is "two hundred ten million, one hundred twenty thousand, one hundred thirteen".