212120210112222 has 16 divisors (see below), whose sum is σ = 449195739061392. Its totient is φ = 66547516897920.

The previous prime is 212120210112203. The next prime is 212120210112229. The reversal of 212120210112222 is 222211012021212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212120210112229) 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, 1039804951429 + ... + 1039804951632.

It is an arithmetic number, because the mean of its divisors is an integer number (28074733691337).

Almost surely, 2^{212120210112222} is an apocalyptic number.

212120210112222 is an abundant number, since it is smaller than the sum of its proper divisors (237075528949170).

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

212120210112222 is a wasteful number, since it uses less digits than its factorization.

212120210112222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2079609903083.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 212120210112222 its reverse (222211012021212), we get a palindrome (434331222133434).

The spelling of 212120210112222 in words is "two hundred twelve trillion, one hundred twenty billion, two hundred ten million, one hundred twelve thousand, two hundred twenty-two".