222222220212 has 24 divisors (see below), whose sum is σ = 518593219200. Its totient is φ = 74063401216.

The previous prime is 222222220169. The next prime is 222222220217. The reversal of 222222220212 is 212022222222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222222220217) 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, 1247037 + ... + 1414052.

It is an arithmetic number, because the mean of its divisors is an integer number (21608050800).

Almost surely, 2^222222220212 is an apocalyptic number.

It is an amenable number.

222222220212 is an abundant number, since it is smaller than the sum of its proper divisors (296370998988).

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

222222220212 is a wasteful number, since it uses less digits than its factorization.

222222220212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2668055 (or 2668053 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 222222220212 its reverse (212022222222), we get a palindrome (434244442434).

The spelling of 222222220212 in words is "two hundred twenty-two billion, two hundred twenty-two million, two hundred twenty thousand, two hundred twelve".