201021212020210 has 8 divisors (see below), whose sum is σ = 361838181636396. Its totient is φ = 80408484808080.

The previous prime is 201021212020193. The next prime is 201021212020273. The reversal of 201021212020210 is 12020212120102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 169150027281361 + 31871184738849 = 13005769^2 + 5645457^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10051060601001 + ... + 10051060601020.

Almost surely, 2^{201021212020210} is an apocalyptic number.

201021212020210 is a deficient number, since it is larger than the sum of its proper divisors (160816969616186).

201021212020210 is a wasteful number, since it uses less digits than its factorization.

201021212020210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20102121202028.

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

Adding to 201021212020210 its reverse (12020212120102), we get a palindrome (213041424140312).

The spelling of 201021212020210 in words is "two hundred one trillion, twenty-one billion, two hundred twelve million, twenty thousand, two hundred ten".