210021313210 has 16 divisors (see below), whose sum is σ = 378160014600. Its totient is φ = 83981491776.

The previous prime is 210021313199. The next prime is 210021313219. The reversal of 210021313210 is 12313120012.

It can be written as a sum of positive squares in 4 ways, for example, as 148597143289 + 61424169921 = 385483^2 + 247839^2 .

It is not an unprimeable number, because it can be changed into a prime (210021313219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3346545 + ... + 3408724.

Almost surely, 2^210021313210 is an apocalyptic number.

210021313210 is a deficient number, since it is larger than the sum of its proper divisors (168138701390).

210021313210 is a wasteful number, since it uses less digits than its factorization.

210021313210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6758385.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 210021313210 its reverse (12313120012), we get a palindrome (222334433222).

The spelling of 210021313210 in words is "two hundred ten billion, twenty-one million, three hundred thirteen thousand, two hundred ten".