212012221102210 has 16 divisors (see below), whose sum is σ = 381645800555256. Its totient is φ = 84799598980608.

The previous prime is 212012221102189. The next prime is 212012221102211. The reversal of 212012221102210 is 12201122210212.

It can be written as a sum of positive squares in 4 ways, for example, as 150963267197521 + 61048953904689 = 12286711^2 + 7813383^2 .

It is not an unprimeable number, because it can be changed into a prime (212012221102211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 661014189 + ... + 661334848.

Almost surely, 2^{212012221102210} is an apocalyptic number.

212012221102210 is a deficient number, since it is larger than the sum of its proper divisors (169633579453046).

212012221102210 is a wasteful number, since it uses less digits than its factorization.

212012221102210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322365077.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 212012221102210 its reverse (12201122210212), we get a palindrome (224213343312422).

The spelling of 212012221102210 in words is "two hundred twelve trillion, twelve billion, two hundred twenty-one million, one hundred two thousand, two hundred ten".