212100122102210 has 64 divisors (see below), whose sum is σ = 395143614369504. Its totient is φ = 81913366118400.

The previous prime is 212100122102177. The next prime is 212100122102213. The reversal of 212100122102210 is 12201221001212.

It can be written as a sum of positive squares in 16 ways, for example, as 8480949610849 + 203619172491361 = 2912207^2 + 14269519^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (212100122102213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 863403200 + ... + 863648820.

Almost surely, 2^{212100122102210} is an apocalyptic number.

212100122102210 is a deficient number, since it is larger than the sum of its proper divisors (183043492267294).

212100122102210 is a wasteful number, since it uses less digits than its factorization.

212100122102210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267479.

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

Adding to 212100122102210 its reverse (12201221001212), we get a palindrome (224301343103422).

The spelling of 212100122102210 in words is "two hundred twelve trillion, one hundred billion, one hundred twenty-two million, one hundred two thousand, two hundred ten".