222478212 has 24 divisors (see below), whose sum is σ = 566308512. Its totient is φ = 67417600.

The previous prime is 222478187. The next prime is 222478229. The reversal of 222478212 is 212874222.

222478212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 222478212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 842589 + ... + 842852.

It is an arithmetic number, because the mean of its divisors is an integer number (23596188).

Almost surely, 2^222478212 is an apocalyptic number.

222478212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

222478212 is an abundant number, since it is smaller than the sum of its proper divisors (343830300).

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

222478212 is a wasteful number, since it uses less digits than its factorization.

222478212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1685459 (or 1685457 counting only the distinct ones).

The product of its digits is 7168, while the sum is 30.

The square root of 222478212 is about 14915.7035368768. The cubic root of 222478212 is about 605.9393571749.

The spelling of 222478212 in words is "two hundred twenty-two million, four hundred seventy-eight thousand, two hundred twelve".