210221210012 has 18 divisors (see below), whose sum is σ = 404371791264. Its totient is φ = 95555095240.

The previous prime is 210221209999. The next prime is 210221210021. The reversal of 210221210012 is 210012122012.

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 5 ways as a sum of consecutive naturals, for example, 217170188 + ... + 217171155.

Almost surely, 2^210221210012 is an apocalyptic number.

210221210012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

210221210012 is a deficient number, since it is larger than the sum of its proper divisors (194150581252).

210221210012 is a wasteful number, since it uses less digits than its factorization.

210221210012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434341369 (or 434341356 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 210221210012 its reverse (210012122012), we get a palindrome (420233332024).

The spelling of 210221210012 in words is "two hundred ten billion, two hundred twenty-one million, two hundred ten thousand, twelve".