212002122220122 has 192 divisors, whose sum is σ = 491336252835840. Its totient is φ = 60774166252800.

The previous prime is 212002122220093. The next prime is 212002122220157. The reversal of 212002122220122 is 221022221200212.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 542855547 + ... + 543245937.

It is an arithmetic number, because the mean of its divisors is an integer number (2559042983520).

Almost surely, 2^{212002122220122} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212002122220122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245668126417920).

212002122220122 is an abundant number, since it is smaller than the sum of its proper divisors (279334130615718).

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

212002122220122 is a wasteful number, since it uses less digits than its factorization.

212002122220122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390909 (or 390896 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 212002122220122 its reverse (221022221200212), we get a palindrome (433024343420334).

The spelling of 212002122220122 in words is "two hundred twelve trillion, two billion, one hundred twenty-two million, two hundred twenty thousand, one hundred twenty-two".