210211222200020 has 24 divisors (see below), whose sum is σ = 441564942512904. Its totient is φ = 84061369662336.

The previous prime is 210211222200019. The next prime is 210211222200037. The reversal of 210211222200020 is 20002222112012.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4308065545744 + 205903156654276 = 2075588^2 + 14349326^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1444876547 + ... + 1445022026.

It is an arithmetic number, because the mean of its divisors is an integer number (18398539271371).

Almost surely, 2^{210211222200020} is an apocalyptic number.

210211222200020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210211222200020 is an abundant number, since it is smaller than the sum of its proper divisors (231353720312884).

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

210211222200020 is a wasteful number, since it uses less digits than its factorization.

210211222200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2889902219 (or 2889902217 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 210211222200020 its reverse (20002222112012), we get a palindrome (230213444312032).

The spelling of 210211222200020 in words is "two hundred ten trillion, two hundred eleven billion, two hundred twenty-two million, two hundred thousand, twenty".