212100212210 has 16 divisors (see below), whose sum is σ = 382732459992. Its totient is φ = 84628512000.

The previous prime is 212100212171. The next prime is 212100212213. The reversal of 212100212210 is 12212001212.

It can be written as a sum of positive squares in 4 ways, for example, as 210140644921 + 1959567289 = 458411^2 + 44267^2 .

It is not an unprimeable number, because it can be changed into a prime (212100212213) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 26442401 + ... + 26450420.

Almost surely, 2^212100212210 is an apocalyptic number.

212100212210 is a deficient number, since it is larger than the sum of its proper divisors (170632247782).

212100212210 is a wasteful number, since it uses less digits than its factorization.

212100212210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52893229.

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

Adding to 212100212210 its reverse (12212001212), we get a palindrome (224312213422).

The spelling of 212100212210 in words is "two hundred twelve billion, one hundred million, two hundred twelve thousand, two hundred ten".