210021201221210 has 64 divisors (see below), whose sum is σ = 405649826841600. Its totient is φ = 78006767235072.

The previous prime is 210021201221197. The next prime is 210021201221267. The reversal of 210021201221210 is 12122102120012.

210021201221210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11786114 + ... + 23642226.

It is an arithmetic number, because the mean of its divisors is an integer number (6338278544400).

Almost surely, 2^{210021201221210} is an apocalyptic number.

210021201221210 is a deficient number, since it is larger than the sum of its proper divisors (195628625620390).

210021201221210 is a wasteful number, since it uses less digits than its factorization.

210021201221210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11857535.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 210021201221210 its reverse (12122102120012), we get a palindrome (222143303341222).

The spelling of 210021201221210 in words is "two hundred ten trillion, twenty-one billion, two hundred one million, two hundred twenty-one thousand, two hundred ten".