212202111221022 has 256 divisors, whose sum is σ = 469098347655168. Its totient is φ = 63599150039040.

The previous prime is 212202111221011. The next prime is 212202111221027. The reversal of 212202111221022 is 220122111202212.

It is a self number, because there is not a number n which added to its sum of digits gives 212202111221022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212202111221027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 172381893147 + ... + 172381894377.

It is an arithmetic number, because the mean of its divisors is an integer number (1832415420528).

Almost surely, 2^{212202111221022} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212202111221022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234549173827584).

212202111221022 is an abundant number, since it is smaller than the sum of its proper divisors (256896236434146).

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

212202111221022 is a wasteful number, since it uses less digits than its factorization.

212202111221022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2403.

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

Adding to 212202111221022 its reverse (220122111202212), we get a palindrome (432324222423234).

The spelling of 212202111221022 in words is "two hundred twelve trillion, two hundred two billion, one hundred eleven million, two hundred twenty-one thousand, twenty-two".