212221001020210 has 256 divisors, whose sum is σ = 487340786193408. Its totient is φ = 64754870169600.

The previous prime is 212221001020187. The next prime is 212221001020411. The reversal of 212221001020210 is 12020100122212.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3121459837 + ... + 3121527823.

It is an arithmetic number, because the mean of its divisors is an integer number (1903674946068).

Almost surely, 2^{212221001020210} is an apocalyptic number.

212221001020210 is an abundant number, since it is smaller than the sum of its proper divisors (275119785173198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212221001020210 is a wasteful number, since it uses less digits than its factorization.

212221001020210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69189.

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

Adding to 212221001020210 its reverse (12020100122212), we get a palindrome (224241101142422).

The spelling of 212221001020210 in words is "two hundred twelve trillion, two hundred twenty-one billion, one million, twenty thousand, two hundred ten".