210120240205 has 8 divisors (see below), whose sum is σ = 253537351704. Its totient is φ = 167167483200.

The previous prime is 210120240163. The next prime is 210120240217. The reversal of 210120240205 is 502042021012.

It can be written as a sum of positive squares in 4 ways, for example, as 11272918276 + 198847321929 = 106174^2 + 445923^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 210120240205 - 2¹³ = 210120232013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 116087626 + ... + 116089435.

It is an arithmetic number, because the mean of its divisors is an integer number (31692168963).

Almost surely, 2^210120240205 is an apocalyptic number.

It is an amenable number.

210120240205 is a deficient number, since it is larger than the sum of its proper divisors (43417111499).

210120240205 is a wasteful number, since it uses less digits than its factorization.

210120240205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232177247.

The product of its (nonzero) digits is 320, while the sum is 19.

Adding to 210120240205 its reverse (502042021012), we get a palindrome (712162261217).

The spelling of 210120240205 in words is "two hundred ten billion, one hundred twenty million, two hundred forty thousand, two hundred five".