210221020012210 has 8 divisors (see below), whose sum is σ = 378397836021996. Its totient is φ = 84088408004880.

The previous prime is 210221020012183. The next prime is 210221020012219. The reversal of 210221020012210 is 12210020122012.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 202002575243121 + 8218444769089 = 14212761^2 + 2866783^2 .

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

It is not an unprimeable number, because it can be changed into a prime (210221020012219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10511051000601 + ... + 10511051000620.

Almost surely, 2^{210221020012210} is an apocalyptic number.

210221020012210 is a deficient number, since it is larger than the sum of its proper divisors (168176816009786).

210221020012210 is a wasteful number, since it uses less digits than its factorization.

210221020012210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21022102001228.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 210221020012210 its reverse (12210020122012), we get a palindrome (222431040134222).

The spelling of 210221020012210 in words is "two hundred ten trillion, two hundred twenty-one billion, twenty million, twelve thousand, two hundred ten".