212211210120210 has 48 divisors (see below), whose sum is σ = 630570452930496. Its totient is φ = 48505419455904.

The previous prime is 212211210120167. The next prime is 212211210120223. The reversal of 212211210120210 is 12021012112212.

212211210120210 is a `hidden beast` number, since 2 + 1 + 221 + 1 + 210 + 1 + 20 + 210 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 23 ways as a sum of consecutive naturals, for example, 168421594704 + ... + 168421595963.

It is an arithmetic number, because the mean of its divisors is an integer number (13136884436052).

Almost surely, 2^{212211210120210} is an apocalyptic number.

212211210120210 is an abundant number, since it is smaller than the sum of its proper divisors (418359242810286).

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

212211210120210 is a wasteful number, since it uses less digits than its factorization.

212211210120210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336843190687 (or 336843190684 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 212211210120210 its reverse (12021012112212), we get a palindrome (224232222232422).

The spelling of 212211210120210 in words is "two hundred twelve trillion, two hundred eleven billion, two hundred ten million, one hundred twenty thousand, two hundred ten".