212012221022210 has 128 divisors (see below), whose sum is σ = 441584765766144. Its totient is φ = 71786115993600.

The previous prime is 212012221022179. The next prime is 212012221022219. The reversal of 212012221022210 is 12220122210212.

It is not an unprimeable number, because it can be changed into a prime (212012221022219) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19509723197 + ... + 19509734063.

It is an arithmetic number, because the mean of its divisors is an integer number (3449880982548).

Almost surely, 2^{212012221022210} is an apocalyptic number.

212012221022210 is an abundant number, since it is smaller than the sum of its proper divisors (229572544743934).

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

212012221022210 is a wasteful number, since it uses less digits than its factorization.

212012221022210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17788.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 212012221022210 its reverse (12220122210212), we get a palindrome (224232343232422).

The spelling of 212012221022210 in words is "two hundred twelve trillion, twelve billion, two hundred twenty-one million, twenty-two thousand, two hundred ten".