222122011212 has 120 divisors (see below), whose sum is σ = 588536256000. Its totient is φ = 73039415904.

The previous prime is 222122011193. The next prime is 222122011217. The reversal of 222122011212 is 212110221222.

It is a happy number.

222122011212 is a `hidden beast` number, since 2 + 221 + 220 + 11 + 212 = 666.

222122011212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (222122011217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 35805703 + ... + 35811905.

It is an arithmetic number, because the mean of its divisors is an integer number (4904468800).

Almost surely, 2^222122011212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222122011212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (294268128000).

222122011212 is an abundant number, since it is smaller than the sum of its proper divisors (366414244788).

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

222122011212 is a wasteful number, since it uses less digits than its factorization.

222122011212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7697 (or 7686 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 222122011212 its reverse (212110221222), we get a palindrome (434232232434).

The spelling of 222122011212 in words is "two hundred twenty-two billion, one hundred twenty-two million, eleven thousand, two hundred twelve".