212010222222 has 192 divisors, whose sum is σ = 496282438080. Its totient is φ = 65278144512.

The previous prime is 212010222209. The next prime is 212010222239. The reversal of 212010222222 is 222222010212.

212010222222 is a `hidden beast` number, since 21 + 201 + 0 + 222 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

212010222222 is a modest number, since divided by 222222 gives 212010 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 212010222195 and 212010222204.

It is a congruent number.

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, 357521158 + ... + 357521750.

It is an arithmetic number, because the mean of its divisors is an integer number (2584804365).

Almost surely, 2^212010222222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212010222222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248141219040).

212010222222 is an abundant number, since it is smaller than the sum of its proper divisors (284272215858).

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

212010222222 is a wasteful number, since it uses less digits than its factorization.

212010222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947 (or 944 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 212010222222 its reverse (222222010212), we get a palindrome (434232232434).

The spelling of 212010222222 in words is "two hundred twelve billion, ten million, two hundred twenty-two thousand, two hundred twenty-two".