210507240213 has 12 divisors (see below), whose sum is σ = 309803108940. Its totient is φ = 137690270016.

The previous prime is 210507240211. The next prime is 210507240241. The reversal of 210507240213 is 312042705012.

It can be written as a sum of positive squares in 2 ways, for example, as 106251225444 + 104256014769 = 325962^2 + 322887^2 .

It is not a de Polignac number, because 210507240213 - 2¹ = 210507240211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210507240211) 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, 220657008 + ... + 220657961.

It is an arithmetic number, because the mean of its divisors is an integer number (25816925745).

Almost surely, 2^210507240213 is an apocalyptic number.

It is an amenable number.

210507240213 is a deficient number, since it is larger than the sum of its proper divisors (99295868727).

210507240213 is a wasteful number, since it uses less digits than its factorization.

210507240213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441315028 (or 441315025 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

Adding to 210507240213 its reverse (312042705012), we get a palindrome (522549945225).

The spelling of 210507240213 in words is "two hundred ten billion, five hundred seven million, two hundred forty thousand, two hundred thirteen".